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Ratto Di Prosperina

Summary:

Nezuko has to see her brother after the battle against Muzan. She was finally human again and needs to see if her brother is alright. Little did she know just exactly what happened.

Notes:

Strawman: Hey dont you have a lot of WIPs youve posted?

Me: Yep

Strawman: And dont you have to finish those?

Me: Also yes

Strawman: So why are you posting this?

Me: Cause why not!

Strawman: Is this gonna just remain a one shot?

Me: Maybe. Never say never

(See the end of the work for more notes.)

Work Text:

Nezuko was running as fast as she could will herself to go so she could get to her brother. Nezuko could see the city growing closer and closer. The sun was beginning to break over the horizon. She had only just turned back into a human a short while ago. It was quite the process. It didn’t hurt physically; it was just uncomfortable, really. But the memories were what hurt the most. She now remembered everything that had happened before she became a demon. The time during her tenure as a demon was cloudy, but there were some things that were clear as day.

She knew one thing, and that was that her brother had risked his life to turn her back into a human. He did everything in his power to just get the means to turn Nezuko back into a human. That touched Nezuko in a way she never expected. She wasn’t all that sure about what the exact situation her brother was in at that moment. All she knew was that he and his comrades were fighting the thing that killed her family and turned her into a demon.

Kibutsuji Muzan.

Nezuko remembered him. She recalled the day he broke into their house and killed everyone except for her. She hadn’t been meant to love. The demon king thought that she was dead this whole time. He thought that his blood hadn’t acclimated to the teen and stated so himself. Little did he know how much Nezuko would defy his expectations. She not only became stronger than other Upper Moons, but she also conquered the sun. That was why the Corps was killing demons right now. All to prevent Kibutsuji from getting Nezuko so that he could become immune to the sun.

The sun was rising as she entered the city that she knew her brother and friends were in. They had to have won; the sun was up, and no demons could withstand its rays. Even though the young girl had never been told where her brother or his comrades were, she just knew deep down where they were. She didn’t have confirmation that they were there, but it was more so intuition. She just has a feeling.

After entering the city, Nezuko noticed that people were staring in a certain direction. They seemed to be mildly distressed. At first, Nezuko was slightly confused. Why were all these people here? Where were they going? Nezuko found out a minute later. There was a decent amount of Kakushi standing in a line. They were keeping the crowd of people away. The Kakushi were trying to keep everyone from getting past him. One was yelling at the top of his lungs. “None of you can go past! There’s a sinkhole!”

Nezuko knew instantly that it wasn’t true. Flicking her eyes to find a way past, she spotted a small alleyway. It was large enough for her to fit in, but it was small enough that none of the Kakushi could follow her. She was a tiny girl compared to the Kakushi. It was the one advantage of being so young and small. She bolted to the alley, one of the members noticing her. The man yelled after the teen. “Hey! You! Stop!”

Did they recognize her?

Did they know who she was?

The young girl ignored the demand and squeezed her way through the alley as one of the Kakushi tried to grab her. He was yelling at her to come back, probably recognizing her.

They failed, however, and Nezuko got through.

She ran as fast as she could in a bid to find her brother. She was thinking of all that he had done for her in these trying times. Tanjiro had joined the Demon Slayer Corps for her and for her alone. All so that he could find a way to turn her back into a human. It touched her deeply; she couldn’t help but be eternally grateful to her big brother. It made her wish that she could do more for him. He had suffered for so long, taking the burden of everything on his shoulders. He shouldn’t have to shoulder the weight of her needs anymore.

She was a human now!

She could actually be helpful now!

As a demon, she couldn’t wrap her mind around certain things. It all felt almost like a dream to her. There was a constant fog over her mind, even when she began talking again. Even when she did help by fighting, she tried to hurt someone once. Her brother had to hold her back from trying to kill the poor woman. Nezuko recalled that clear as day. It was disturbing to look back on just how much of a wild animal Nezuko was.

Now Nezuko could change. She was different now! She hopes that they can return to some semblance of normalcy now that her brother has killed the demon that killed her family. That’s not all; Tanjiro’s friends can join them as well! Nezuko somewhat recalled them. They were all so nice to her in her plight. Inosuke was quite the go-getter. He was energetic when it came to doing anything. Then there was Zenitsu. He was…odd… But he was dependable when you really needed him. Kanao was quiet but was pleasant to be around. Together, they can enjoy the new life she and Tanjiro will lead!

Nezuko must be getting close now; there was evidence of a struggle. There was an increasing amount of rubble on the ground the further into town she ran. It started with some disturbed dirt. Soon there were some bricks on the ground. Then some windows were broken. Then the windows were completely destroyed. Then sections of the walls were destroyed. Finally, several buildings had been stripped to their bones.

The road before her was in complete carnage.

However, despite running through a battlefield, there was no one. Not a soul acknowledged her, for there was nobody there. There was not even a single human body. It was an abandoned portion of the town. This is where they have to be. Why else would the Kakushi be where they were? Why else would the town be destroyed? Nezuko slowed down and began looking around in confusion.

Where was everyone?

What happened?

Did they win?

If they did, why wasn’t anyone here?

Even if they didn’t, why were there no dead bodies?

Nezuko eventually stopped completely. Nezuko stood on top of a pile of rubble and looked around the battlefield. There were no humans in sight. She flicked her head from side to side, trying to figure out where on earth her brother and friends were. What on earth was going on? Nezuko began wheeling her body around, trying to figure out where her brother was. She needed to find someone, anyone.

Little did she know what had actually happened.

The sun had been covered up by a cloud and had darkened the street the young girl was standing on. It was almost as dark as night. The cloud was so thick. If only she could have sensed the danger lurking in the shadows of a nearby building. Her back was turned to the threat that was hidden in the darkness of one of the few remaining buildings. It was the most put-together building on this destroyed battlefield. It made sense that the one thing that Nezuko should have looked out for was in there. Nezuko was oblivious to the one presence she should have remained alert to.

A second after the sun became hidden and enshrouded the road, Nezuko felt something thick begin to wrap around her waist. It felt long, thick, and almost like a rope. She gasped in shock at the feeling. What on earth was this?! Where did this come from?! Who was doing this?! Right as Nezuko tried to run away from the odd thing wrapping around her waist, she was yanked back by the unfamiliar…tentacle? The shocked girl screamed in panic.

What was grabbing her?!

What was this?!

While she was thrashing against the foreign object, she had been pulled into the shadows of one of the few remaining buildings. The second her feet were consumed by the darkness, the sun had peeked out once more, and the street was flooded by sunlight as if nothing had happened. It was almost as if Nezuko had never been on the abandoned road. At least physically it seemed like no human had been on the road. Meanwhile, Nezuko was screaming her head off trying to break free of whatever had grabbed her.

Nezuko thrashed against the rope-like thing around her waist. She needed to escape whoever or whatever had grabbed her! Eventually, it stopped pulling her, and she was left there to struggle against the firm grip on her waist. Soon another stiff tentacle had forced Nezuko’s chin up all the way. This was so she could see who was behind her. Pink's eyes widened to the max in horror when she saw who had dragged her here.

He looked a bit different now. Instead of raven hair, it was white right now. His hair was much longer and more unkempt as well. His hair went down his back to about the midsection. His body was covered in blood-colored veins. They were on his forehead, cheeks, neck, upper body, and lower body. There were what Nezuko could only describe as tentacles protruding from his back. There were marks visible on various parts of his body. His arms and legs, mainly. However, it was undeniable who this was.

It was Muzan Kibutsuji, the monster that had killed her family and turned her into a demon.

He was not dead.

Why was he still alive!?

Wasn't that the reason why her brother left her to kill this monster?!

What on earth happened during their fight?!

The demon above her stared at the young girl’s terrified eyes with interest. Crimson eyes glowed as he stared at the teen. There wasn’t any malice in them, but there did appear to be a mild disappointment. The silence was thick in the air. Nezuko was petrified; Muzan was curious. He eventually sighed in annoyance. “You were turned back into a human…”

Nezuko gulped in fear. She was not about to say anything to this freak. It was largely out of fear over what he was going to do. Muzan was supposed to be dead and had to be annoyed that the object that would have given him immunity to the sun was not a demon anymore. But her gaze was also filled with pure anger. She was not going to explain how she had been turned back into a human. But her silence was mainly because of her hatred of this demon. He had killed her family and forced her brother to suffer for her sake.

Muzan continued staring at Nezuko in silence again. He didn’t seem to be ticked off that Nezuko hadn’t responded yet. He eventually moved so that he was directly in front of her, moving the tentacle off her chin. He kneeled down before her, prompting Nezuko to look away from the demon in front of her. However, he didn’t seem to appreciate being ignored. He grabbed her jaw and made her face him. The odd thing was there was a degree of gentleness to the grasp. His hand was so cold it made Nezuko shiver.

Muzan peered deeply into Nezuko’s eyes. Her garnet eyes tried to appear defiant, but it was clear there was anxiety beneath them. She hasn’t had to express her feelings as a true human in such a long time. But she did pretty well in her opinion. Muzan clicked his tongue in deep contemplation. "That's rather unfortunate right now... I doubt you can be turned back right this moment. There’s no doubt that damned Tamayo added something to give you immunity… But that shouldn’t last forever…”

Nezuko’s heart stopped, and her breath hitched up. He wanted to turn her back into a demon? But he clearly knew it would probably take time. So does that mean that he was going to kidnap Nezuko?! That was really bad! She has to escape this monster! But how?

More importantly, where was Tanjiro?

Muzan continued looking at Nezuko. There was a look in his eyes that made Nezuko greatly uncomfortable. What was he thinking about while looking at Nezuko? What evil thoughts were running through his mind? But there was a far less disconcerting look behind his crimson eyes. It was a small smile that Nezuko could see; it was still off-putting. “That’s fine though… I have an alternative solution to let me walk beneath the sun…”

What did he mean by that? Sure, it would make sense to potentially kidnap Nezuko for the purpose of eventually turning Nezuko back into a demon. But an alternative solution? Who or what was that alternative solution? What was Muzan planning in that repulsive head of his? Muzan suddenly lifted Nezuko off the floor and turned her around. When her eyes fell upon a crumbled form on the floor, her breath stopped.

It was her brother.

He was unconscious on the floor. Nezuko’s heart rate became erratic. What did this monster do to her brother?! Nezuko began screaming at the top of her lungs. Her voice was ragged as she yelled. “Tanjiro!!! Oni-chan!!! Wake up!!! Please!!!”

Nezuko continued screaming at her brother to wake up. All the while, Muzan snaked another tentacle toward the unconscious boy. When it finally wrapped itself around Tanjiro’s waist, he was lifted up from the floor. His body was limp in the grasp of the tentacle. The demon sauntered up towards the comatose boy, Nezuko being taken with him, allowing her a closer look.

Muzan finally stopped in front of Tanjiro. The demon summoned another tentacle to wrap around Tanjiro’s neck. It was loose and didn’t cover his whole neck. It did allow Tanjiro to be face-to-face with the demon king when he finally wakes up. Muzan watched him for several moments in absolute silence. Was he waiting for him to wake up? In those brief moments, Nezuko was finally able to examine her brother properly. She was completely devastated by the condition he was in. His right eye had been slashed to bits and was gone. His right arm was completely gone, but it was thankfully not bleeding. There was so much blood and dirt covering her brother she was quite frankly surprised that he was alive.

Why did her brother have to suffer like this?!

What could he have done to deserve all this pain?!

Nezuko felt tears escape her eyes as she stared at her unconscious brother. She was almost tempted to beg Muzan to let her brother go. Let him live. She would go with Muzan if he lets Tanjiro go. But what would Tanjiro do if that happened? He would likely blame himself for living while who knows how many others had died. And then there was Nezuko. How would he feel knowing that Nezuko gave up her freedom to spare his life? Nezuko hated the concept of causing her brother further anguish.

Nezuko’s attention was turned back to her brother when a small groan escaped his lips. Her eyes looked at her brother, and she watched as Tanjiro’s remaining eye opened slowly. Tanjiro was murmuring incomprehensibly. He appeared disoriented as his gaze landed upon the strange scene before him. When he finally realized what was transpiring, his eye was filled with horror. He started to yell in fury. “WHAT ARE YOU-?!”

Tanjiro was suddenly cut off by a spike entering the side of his neck. When Nezuko saw this, she screamed at the top of her lungs and began thrashing once more. She knew full well what Muzan was doing, having experienced this once herself. Tanjiro’s eye was blown open as he began to choke. It had to be tormenting to feel blood fill his body like it was right now. Muzan outlined what he was doing and what he was hoping would happen. “How will you look as a demon…? I wonder if you’ll be immune to the sun as well… Tanjiro…”

Both Tanjiro and Nezuko’s faces turned to fear. Nezuko hadn’t even considered that. And it was clear that Tanjiro hadn’t either. But if what Muzan was speculating is true, then they have lost for the rest of eternity. If it turned out that Tanjiro was immune to the sun as a demon, it would all be over. No one will ever be able to defeat Muzan. Then there’s Tanjiro’s fate. He will die if he ends up being immune. Muzan will devour his body to gain the immunity that Tanjiro would have. That means that Nezuko will be all alone in the world.

The demon withdrew the spike as Tanjiro was unceremoniously dropped to the floor. The boy was left to writhe as he transformed into a demon. He was gagging and clawing at his throat in agony. His arm was growing back while the missing eye was starting to reform. Tanjiro was turning into a demon right before the girl’s eyes. Tanjiro looked up at his sister as she was crying at the thought of losing him. He watched his sister sob, his eye begging for forgiveness as the demonification began to affect that same eye.

It took barely any time for him to fully turn into a demon, and he lay there for a moment, almost appearing as if he were asleep again. Just how long would it take for Tanjiro to fully turn, though? He healed incredibly fast, so it shouldn’t take too long. Nezuko was in absolute disbelief. Muzan watched impatiently as if he expected Tanjiro to be awake already. “It seems like you could have been able to take even more of my blood… Regardless, I hope it doesn’t take long for you to wake up… I don’t want to stay in this place any longer than needed…”

Muzan tapped his foot on the ground as he waited. Nezuko suddenly felt herself being lowered onto the floor. Her feet were planted firmly on the ground. Nezuko felt the tentacle loosen around her waist. What was Muzan doing? Why was he letting her go? The garnet-eyed girl nervously gazed up at the demon king. What was he doing? Why was he letting her out of his grip? Nezuko stared at the monster as his muscles tensed. “Well… This appears that it’s going to take more time than I would like… But I have an idea on how we could pass the time together…”

Nezuko wasn’t any less confused or put at ease. We? What did he mean by ‘we?’ What was this monster planning? It scared Nezuko to no end. The demon king turned around and stepped closer to Nezuko. The girl’s body was frozen in terror. Was Muzan about to kill her? Torture her? What evil action was he about to do towards the poor teen?

Muzan’s hand shot forward towards Nezuko’s clothes in the blink of an eye. His claws dug into the clothes and tore off the front without much thought. Leaving Nezuko completely exposed to this monster’s vile gaze. The girl gasped in terror and jumped back. The girl was about ready to run away. Muzan smiled vilely as he gazed at Nezuko’s chest. Nezuko shook her head in terror as she watched the demon king. He smelled the piece of cloth in his hand with his eyes transfixed on Nezuko. That told Nezuko that he planned far more.

Nezuko turned around to dash away and further into the house. She has to get out of here! It was about to get so much worse! Nezuko began to run as Muzan reached out to grab the poor girl properly. The teen just barely avoided the monster’s hand. He managed to firmly grasp the teen’s haori instead. He pulled it off without any issue. Nezuko spotted stairs nearby and bolted up them in sheer panic. Leaving Muzan there to laugh amusedly. “You can run, little rabbit… But you can't hide from me forever…”

Nezuko gulped in pure dread and continued to run. Her steps were uneven and without precision. She was careless as panic drove her forward. She has to find either a place in the sun or a way to get out of the building into the sunlight. But what about Tanjiro? That was the only thing that gave the girl pause. She didn’t want her dear brother to suffer at the hands of Muzan. If he’s immune to the sun, he’ll be eaten. But Nezuko can't drag Tanjiro into the sun for fear that he might NOT be immune to the sunlight.

Nezuko was far too distracted and, in the end, crashed against the wall suddenly. Nezuko hit her head harshly against the wall. The teen stopped running in disorientation. Nezuko rubbed her forehead in pain. Out of the corner of her eye, Nezuko spotted Muzan at the end of the hall near the stairs. His face was filled with amusement as he stared at the teen. His eyes were glowing with desire. Nezuko screamed and took off down the hallway again. She needed to get away from this monster!

Nezuko kept going and spotted an open door with light flooding from it. That is where she goes! She has to head in there! She can get into the light and be safe from Muzan’s grasp! The girl dashed towards the door. Nezuko heard Muzan behind her get ever so closer. He was clicking his tongue in a delighted manner. “You really think you can escape from me? Rather silly, don’t you think?”

Nezuko’s eyes widened in terror as she kept sprinting to the door. The girl slid inside of the room and noticed with horror that the light barely wafted through the window. Nezuko was not at the proper angle. The teen would have to launch herself through the window to save herself. That was terrifying to realize. But Nezuko has to escape Muzan! She can't stay here with this monster! He wanted to hurt her!

Nezuko dashed inside the room and made it halfway to the window. She almost made it when a large hand grabbed onto her clothes. Nezuko screeched and yanked her shoulder away from the hand. Regrettably, more of Nezuko’s clothes tore off in the process. Nezuko’s full left shoulder was exposed to the demon king. Nezuko tried to keep running, though. Not that she made it too far. The demon king grabbed Nezuko again.

Muzan grabbed Nezuko’s clothes again, this time by her lower half. That was torn off in a matter of a few seconds. Leaving Nezuko’s legs somewhat exposed to this monster. Nezuko kept thrashing in a desperate attempt to get away. With the movements, Nezuko was further exposed. All that remained was a thin strip around her waist by the end, her fundoshi, and her socks.

Muzan suddenly picked up Nezuko by her left thigh and lower back. It was as if he were about to throw Nezuko over his shoulder. He failed because of Nezuko if that was his plan. The teen had thrust her hand forward and made contact with the demon king’s face. She pushed with her full might against his face. The demon king didn’t seem to mind, though. He was smiling in glee at Nezuko’s resistance. The teen’s heart sank into the pit of her stomach seeing that expression.

Muzan was chuckling. Nezuko was panicking further. She kept trying to launch out of this monster’s arms. It was a massive failure, though. Muzan’s grip was incredibly strong. His grip on her back and her thigh was too powerful to break out of. The girl realized in horror that she wasn’t getting out of the man’s grip. Nezuko was going to be harmed by this monster, and there was nothing she could do about it…

Nezuko gasped and felt her guts shrivel when she suddenly felt a tongue lick her thigh. Was there a maw on Muzan’s hand?! That was horrifying to feel. Nezuko was completely frozen in pure fear as Muzan laughed. Muzan spoke amusedly. “You’re so adorable performing your little display. I cannot deny that it is silly to see you try to escape me… Well, little rabbit, shall we have our fun now?”

Nezuko suddenly found that she was thrown over Muzan’s shoulder. The demon king sauntered through the hallway back towards the initial room. Huh? Why was he being taken back towards the initial room? Did Muzan want to be there to wait for Tanjiro to wake up? Oh god, was Tanjiro going to be forced to witness Muzan hurt Nezuko? That was terrifying! Nezuko can't be made to do this!

Muzan began to step down the stairs. That gave Nezuko an idea. It was a stupid idea, but it was all Nezuko had. Nezuko threw all her body weight backward to throw Muzan off balance. The man gasped as he lost his footing. Nezuko and Muzan fell down the stairs with harsh crashing. Nezuko felt her arms, stomach, and thighs hit the edges of the stairs. Muzan was worse off; Nezuko heard his bones crack. Good. The two fell down fully. On the final crash, Nezuko landed on her nose violently.

Nezuko began to stand up in pain. The teen grabbed her nose as it throbbed in pain. Nezuko felt blood gush from her nose. That was the least of her concerns. Nezuko has to get out of the building. She has to get away from Muzan! Nezuko started to stumble towards the light with adrenaline running high. Nezuko’s mind was a storm. There was one part of the girl’s mind that regretted that she had to leave Tanjiro here in this cursed place. But Nezuko was sure that this was what Tanjiro would have wanted. He’d rather have Nezuko be safe than himself. It was regrettable but Nezuko agreed with that sentiment in this moment.

Nezuko didn’t even make it halfway to the door. Nezuko was thrown to the floor underneath the demon king. Nezuko squawked and tried to pull herself away from this monster. Nezuko felt the monster tear off the final bit of clothes that remained on the teen. Now Nezuko was fully nude before the demon king. The girl froze in terror, feeling Muzan’s fingers run across the teen’s back. The girl whimpered, feeling the monster touch her butt crack. The demon king cooed out. “So adorable… I’m going to enjoy this very much, little rabbit… What about you?”

Nezuko shook her head and tried to pull away again. Nezuko was gasping in dread. The demon king sighed amusedly. The teen looked back in horror. Nezuko watched as the red mass at Muzan’s crotch began to shift. It changed into a longer shape. It began to turn into properly colored flesh. It turned into a penis. It stood upright and leaked a white liquid. What on earth was that white liquid?! What was Muzan about to do?!

The demon king lifted Nezuko’s hip up into the air. Nezuko watched in horror as the demon king began to direct the tip of his phallus towards her folds. His left hand grasped his penis as he directed it. The girl gasped in panic as she felt the demon king start to prod her down there. The teen tried to pull away again. It was yet again another failure. Muzan pulled Nezuko closer with his other hand. Nezuko felt the demon king begin to push inside.

Nezuko gasped and hissed in pure agony. It hurt like hell. Nezuko couldn’t scream. Her voice was caught in her throat. As Muzan pushed further in, the more Nezuko felt the inside of her private parts being torn up. The teen was frozen in disbelief and pain. Muzan leaned forward and moved Nezuko’s hair out of the way of Nezuko’s neck. The demon king leaned down and licked the base of Nezuko’s neck. His voice was soft. “You feel so fucking good…”

Muzan suddenly grabbed underneath Nezuko’s chin and moved her head upward. The teen was hissing in pain as Muzan moved his face closer to her face. Nezuko felt his hair tickle her skin. The man’s breath bloomed across her face. It smelled thick of blood. It was the one thing that Nezuko could never forget, even now that she was a human again. The demon king hummed playfully. “You know I never planned on really killing you… I had planned to try my best to keep you alive even after I learned you were immune to the sun… Now that I have been informed that your brother could potentially conquer the sun as well, I realize I could keep you in my grasp. I can enjoy you properly… I can finally fuck you…”

Nezuko froze in horror. Muzan has wanted to do what to her?! He’s been wanting to hurt her this whole time?! What the hell?! Nezuko stared ahead in complete disbelief. Nezuko looked at her brother in realization. He was going to die, and Nezuko was going to be hurt by Muzan for the rest of her days?! That was horrific!

Nezuko suddenly gasped upon feeling Muzan’s lips plant against hers. The demon king kissed the girl as deeply as he could at this angle. The demon king inserted his tongue into Nezuko’s mouth. The girl’s eyes were as wide as could be. It felt so strange, and she hated it. The demon twirled his tongue around Nezuko’s tongue. The man was aggressive in his actions. Muzan hasn’t moved inside of Nezuko yet. But the pain was still there.

Muzan drew away with a string of saliva connecting the two. The demon king chuckled hotly against Nezuko’s face. He licked the side of Nezuko’s cheek slowly as if he were savoring her. The demon king nipped Nezuko’s right ear. The monster spoke lowly into the girl’s ear. “You taste delicious… So ravishing… Now let me savor the rest of you…”

Nezuko bit back a scream as the demon king suddenly moved inside of her. It was incredibly painful to feel. It felt as if Muzan were ripping her apart from the inside. He didn’t seem to care one bit, though. He put his left hand on Nezuko’s waist to keep her butt in an optimal position and began to move in and out at a rather intense pace. He was grunting as he kept up his swift movements. Nezuko swore that she was being ripped in half by this freak.

Muzan didn’t care one bit about the way that he was acting. Rather, he was relishing in the manner in which he tormented Nezuko. He was groaning lowly as he kept moving. He was moving faster and faster. The sounds of skin-on-skin were going to haunt Nezuko until the end of her days. She was never going to forget this for as long as she lived. Her memories were already foggy enough. Why does THIS have to be one of the first things Nezuko experiences after turning back into a human?!

Why?!

Why?!

WHY?!

Nezuko put her head against the cool wooden floor as she felt tears drip down her face. Nezuko was in so much pain. Both physically and emotionally. The physical pain was obvious. It doesn’t take a genius to see why Nezuko was in agony. But for the emotional toll, it was a few factors. One was the fact that Muzan stated that he’s wanted to do this for some time. For how long is the question? When did he first decide that he wanted to hurt the teen? Why hasn’t he done so sooner? Why not when he first met her? Then there was Tanjiro. He was going to wake up and see this… That fact alone shattered Nezuko’s heart into billions of tiny pieces.

Where was everyone?

Why wasn’t anyone saving Nezuko?

Why is Nezuko so alone?

Nezuko opened her eyes briefly to spot something dripping out of her. The teen looked at what it was in great fear. Garnet's eyes widened seeing the blood dripping out of her. Muzan was using her so badly that Nezuko was bleeding. And it wasn’t a small amount. Nezuko broke down seeing that. She began to cry even more. Nezuko furiously tried to wipe her tears away to no avail. She couldn’t stop her crying. This was all too much all at once.

Nezuko wanted to go home…

Nezuko cried out when her head was suddenly forced up by Muzan pulling on her hair with his free hand. That one split second in which she opened her mouth allowed the demon king to slap his hand over Nezuko’s mouth. It was the hand with the maw, so Nezuko was met by a tongue instantly. Garnet eyes kept crying thick tears as the tongue forced hers into a dance. Nezuko could hear the demon king moaning further. He was moving much quicker now. He breathed heavily. “Delectable… I made the right choice in who I decided to gift my seed to. Don’t you think so, Nezuko?”

Nezuko didn’t answer. Well, not that she could; the maw was still over her mouth. But even if she could, she didn’t want to. How could she even so much as think to respond to the disgusting monster who was hurting her this badly? He was repulsive. Vile. One of the most evil men in all of Japan. And he thinks this is a gift to Nezuko? What a degrading joke. Nezuko tried to move her head away with no success.

Muzan moved faster and faster. Eventually, Nezuko gasped in shock, feeling Muzan’s penis start to twitch noticeably inside of her. What was it doing? Why was it moving like that now? What was Muzan about to do to her poor, battered body? Muzan took his hand away from Nezuko’s mouth. Only to then replace it with his actual mouth. Muzan kissed Nezuko deeply as he thrust his hips even faster than before. Nezuko grunted in further pain at the feelings.

Nezuko gasped in surprise when she suddenly felt it. There was something hot shooting up inside of her battered and bleeding private part. What was that?! What did this sick freak just put inside of her?! The demon king had been moaning rather obscenely as he forced the strange liquid inside. Muzan was now gently rocking his hips as he calmed down. He continued to kiss the girl until he came to a full stop. He withdrew his tongue with yet another string of saliva attaching the two. It broke and landed on Nezuko’s chin.

Muzan dared to observe Nezuko with an affectionate smile. He stared at her as if she were the most beautiful thing on earth. No, she wasn’t what he was seeing her as, and it was all entirely his fault. There had to be crusted blood on her face from when she hit her nose. She has to have a large number of bruises from falling down the stairs. She’s crying like a madman in pain. Her eyes have to be bloodshot. She was bleeding heavily from her private part. What part of any of that was beautiful in the eyes of this sadistic monster?!

Muzan moved back a little. He then took his penis out of the poor girl. Only for one second later, to just turn Nezuko onto her back. Nezuko landed on her back with a grunt. Then a gasp as Muzan shoved his penis back inside. He looked down at the teen with a ravenous look. He leaned closer with an evil smile on his face. His eyes glowed from behind the strands of white hair covering his face. “You look incredible… I really did make the right decision in choosing you, my chosen demon… You take me so well… Truly a pity that I did not take you with me the night that we first met… Things would have been very different… I do wonder if I had, would you have shown me your gift of being able to walk beneath the sun? Or would I have never learned that… The possibilities are endless, really. But no matter. I have you here and now, and I don’t plan on letting you go again. So why don’t we continue until your brother wakes up?”

Nezuko gasped in short bursts upon feeling the demon king begin to move in and out of the girl again. The teen felt tears begin to pour from her eyes once again. The demon king leaned down and began to lick up Nezuko’s tears. The teen recoiled and whimpered, feeling the man’s tongue. It felt utterly disgusting on her face. Nezuko hated herself so much right now. She was a vile human being for not fighting even harder to get away. Nezuko was a filthy human being.

Muzan moved his lips further down the girl’s body. He slowly touched the girl’s skin. Nezuko shivered, feeling Muzan lick her neck and eventually her shoulder. The demon king’s mouth lingered near the girl’s left shoulder. What was he doing? Nezuko didn’t have much chance to be confused. Nezuko screamed in pain as Muzan suddenly bit Nezuko’s shoulder. It wasn’t the deepest bite, but Muzan does have very sharp canines. He bit deep enough that Nezuko felt as if he were about to rip that chunk of flesh out fully.

He didn’t thank God. But the demon king began to lick up the blood. He moaned as he licked up the blood. Nezuko whined hearing that. It was miserable to hear this freak react this way to her blood. Muzan began to back away from the poor girl. The man stared right into the teen’s eyes. There was blood on the corners of his mouth. His eyes were glowing in victory. “Hmm… I hadn’t expected your blood to taste as delicious as it is…”

Muzan didn’t say anything further. The demon king had suddenly leaned forward and planted his lips against Nezuko’s mouth. The demon king now had the full opportunity to kiss Nezuko properly. His tongue inserted itself into the teen’s mouth. He moaned loudly into Nezuko’s mouth. Meanwhile, the teen was in pure misery. She wanted to scream so badly. Nezuko wanted to leave, but she couldn't. Muzan’s grip was too strong on her body. His body was so heavy. It was oppressive.

Nezuko grunted in shock again when she felt the demon king put the hot liquid inside again. Seriously, what on earth was this?! Muzan rocked his hips slowly one final time as he kept kissing Nezuko. When he stilled, he withdrew once again. Muzan withdrew far enough to fully get a view of the girl’s distressed face. He cocked his head as his eyes glowed with an emotion that made Nezuko’s guts recoil. His voice was low. “You look rather confused, Nezuko… Hmm… If I had to guess, you don’t know what I put inside your womb. Well, I can explain. It’s my seed. Now it has no use, as I’m a demon and you’re a human. However, if we were both humans, it would get you pregnant. And if it were the reverse, with us both being demons, it certainly would be an interesting experiment. I would love to try to see if I could make you pregnant… But that’s for far later…”

Nezuko wheezed in horror. What?! This was what created babies?! But at least Nezuko was rest assured that she wasn’t going to be pregnant this time. But what about in the future? Muzan said he would like to try. That was terrifying. The prospect of possibly being forced to have Muzan’s child was just incomprehensible. Nezuko has to escape; she just has to! She can't stay here with this monster! She can't!

Muzan looked up beyond the girl. There was a frown forming on his lips. What was he looking at? Nezuko watched as tentacles launched from Muzan’s back. There were four that shot from his back. What was he doing?! Nezuko’s heart sank hearing a new grunt from behind. There was only one person that could have made that noise. Nezuko cranked her head up slowly in dread. The tentacles were wrapped around the one person Nezuko was hoping wouldn’t wake up.

Tanjiro.

Tanjiro was now a full demon. His eyes were ruby red. They looked eerily similar to Muzan’s. His eyes were wide in shock, confusion, and horror. It was an amalgamation of emotions upon seeing the scene before him. It seemed that Tanjiro still had his memories. There were tears in his eyes as he met the gaze of his sister. He knew what was happening to his sister. And he couldn’t do anything.

Tanjiro was grunting and snarling at Muzan. He couldn’t say a thing. It was just like how Nezuko was until she got closer to the end of her time being a demon. But the look of fury in the boy’s eyes said enough. All the while, Nezuko was in pain and misery. Muzan chuckled amusedly. “What a foolish display you’ve got there, Tanjiro. And you really thought that you would kill me? Well, just look and see what your efforts have gotten you. Your sister is here beneath me. You're a demon. And soon you’ll be absorbed should you prove immune to the sun. And if you aren’t, then I have use for you as a subordinate. Imagine it, Tanjiro. You're killing for me…”

Tanjiro snarled in further rage, He tried to launch forward towards the demon king. He wanted to hurt Muzan so desperately. It was for both what he did to him. What he was doing to Nezuko. Everything. Every sin Muzan ever committed. Tanjiro wanted to inflict unimaginable pain on the demon king. But he couldn’t. The boy couldn’t move an inch thanks to the tentacles constricting him. Muzan shook his head. “Still fighting? Rather pointless now, isn’t it? But before I test and see if you are really immune to the sun, I might as well have a bit more fun…”

Nezuko gasped in shock as she was suddenly lifted up. Nezuko found herself sitting on Muzan’s lap. A new tentacle grabbed Nezuko’s wrists and held her in place. The teen tried to move away, but she had been unable to. The demon king’s grip on Nezuko’s thighs was too strong. Nezuko gasped in horror as she felt Muzan’s penis harden once again. Oh no…

No!

No!

No! No! No!

NOOO!!!

Not again!

Nezuko kept struggling to get away. She had been unable to again because she was too weak to put up a proper fight. The demon king kissed the crook of Nezuko’s right shoulder. He sniffed deeply and sighed. He sounded like he was completely in love with Nezuko. Nezuko wheezed as Muzan spoke smugly to the struggling Tanjiro. “Enjoy the show, Tanjiro. It might be the last thing that you ever see…”

Nezuko gasped wetly as Muzan began to roll his hips into Nezuko. The teen began to weep as Muzan groaned right into Nezuko’s ear. Nezuko could hear her brother behind her. His growls sounded strangled. They were filled with hate and despair. He was desperate to get to his sister. He didn’t want to be forced to witness this. He didn’t want his sister to have pain continue to be inflicted on her. Nezuko appreciated it, but why does it always have to be him?

Why does Tanjiro have to keep suffering? He was one of the nicest people Nezuko has ever known. He gave up having a normal life, all so that he could turn the girl back into a human. He sacrificed so much, all for it to just end up like this. Tanjiro is now a demon, with Nezuko being hurt by the demon king. Tanjiro didn’t deserve any of this. And yet he suffered so much and for no reason.

Nezuko could feel something drip out of her. Was it blood or the seed Muzan mentioned? Was it a combination of both? Either way, it felt disgusting. Nezuko hated herself so much. She was a fool to have tried to get here. She should have just waited a bit longer. She should have just stayed with the others that she had been with. Nezuko would have been safe. She wouldn’t have been stuck here. Nezuko wouldn’t have been hurt in such a violent manner.

Muzan kissed the nook of Nezuko’s neck gently. His hands squeezed the fat of Nezuko’s thighs softly. All the while his thrusts were violent. It was a drastic contrast between the actions. Nezuko tensed up, feeling Muzan’s fangs graze her shoulder. Oh gods, was he about to bite her again?! Nezuko attempted to pull away but failed miserably. The man bit Nezuko deeply, like how it was the last time.

Nezuko screeched in pain. When Nezuko stopped screaming, she heard Tanjiro growling particularly loudly this time. The girl felt Muzan lap up the blood gushing out of her shoulder. The demon king chuckled hotly as he backed away for a moment. He kissed the bite Nezuko now had because of him. He looked at Tanjiro and mocked him. “Oh my, Tanjiro. You look pathetically desperate. What is it that you want? You want your sister’s blood? It smells delicious, right? Well, too bad your dear sister belongs to me and me alone. Or are you like this because you want to get your sister away from me? That won't happen; I won't allow it… Again, your sister belongs to me…”

Nezuko hiccupped and pressed her face against Muzan’s shoulder. It's not as if she wanted to do that. It was all she could do to try and get away from this awful situation. She just wanted it to end. Muzan was growing faster and just a bit sloppy. Was he about to finish again? Dear God, why did this have to happen to her? What could she have possibly done to deserve this? Was this really her punishment for running over here initially?

Why?!

Why?!

WHY?!

Nezuko was already giving up. She wanted to just disappear. Nezuko wanted to vanish into thin air and not be here anymore. The teen’s eyes widened upon hearing Tanjiro. His voice was still just as strangled as before. He could barely get any decipherable noises out. But there were tangible words. “N- Nezuko…Nez-Nezuko…”

Nezuko’s eyes shimmered hearing her brother speak. He was still there. He was still fighting to save his sister from whatever fate was forced upon her. He truly didn’t care about himself. All he really did care about was Nezuko. And that touched Nezuko deeply. And Nezuko was going to lose that. One way or another, Nezuko was losing her dear older brother. This was all Muzan’s fault. He ripped apart the lives of so many people. He destroyed Nezuko’s and Tanjiro’s lives. And for what?

No real reason?

Muzan shook his head. He kissed Nezuko’s neck again. But it was clear that he was annoyed at the boy before him. The teen gasped as she was suddenly flipped around. Nezuko was now facing her brother properly. Tears were streaming down his eyes. He was bleeding onto the floor from how deeply the tentacles were digging into him. Nezuko’s arms were held by two tentacles. She was held in place as the teen realized in horror that she was going to be forced to see her brother as Muzan released into her again.

Muzan began at once, all the while Nezuko couldn’t do anything. All she could do was stare at her brother in horror. Her garnet eyes were wide in regret and guilt. Tanjiro was still trying to get over to his sister. All the while he cried in equal guilt. Both siblings felt incredible remorse over the fact that they couldn’t do anything to help the other. They both were doomed in drastically different ways. Nezuko cried harder as Muzan thrust particularly harshly into the girl. The demon king hummed against Nezuko’s ear. “I’m getting close, Nezuko… Let’s make sure that your brother gets a good view. What do you say?”

Nezuko tried to look away, but she couldn’t. Muzan had grabbed her cheek and made her look at Tanjiro. His other hand wrapped around her waist and spread Nezuko’s folds. All so that Tanjiro could see how bloody and battered Nezuko was at the moment. The slick sounds were going to follow Nezuko into her nightmares. The pain was never going to leave Nezuko for the rest of her life. This feeling was always going to be on her mind. The shame was never going away.

Muzan thrust into Nezuko a few more times. Then he orgasmed again. Nezuko cried out in misery as she felt that vile seed fill her again. Nezuko felt so full now. It was awful. Nezuko sobbed openly as Muzan kissed Nezuko’s bloody shoulder. He was completely still as he allowed Tanjiro to observe the vile deed forced upon his sister. Tanjiro was crying silently; he couldn’t do anything to stop this, and that fact broke his heart. Muzan whispered smugly into the girl’s ear. “Have fun?” I know I did…”

Nezuko was silent. She refused to answer this monster’s question. He didn’t seem to care, though. All he did was shrug. He pulled Nezuko off of his penis. Nezuko whined, feeling the sudden emptiness and gush of liquid. Nezuko couldn’t even move right at that moment. She was just numb to everything. The tentacles on her arms fell away and vanished. Muzan laid Nezuko on the floor without any regard. It was not as if Nezuko was going to run away. She couldn’t force herself to get up from the lying position she was in.

Nezuko could see her brother ahead of her. Muzan was sauntering over towards the boy. Tanjiro’s ruby eyes glared at the demon king murderously. Muzan didn’t seem to care that much, though. The man grabbed Tanjiro by the front of his shirt. The tentacles fell away. The boy instantly began to claw and kick at the demon king in rage. He wanted vengeance for Nezuko. His attempts to harm Muzan failed miserably.

Muzan began to drag Tanjiro away. Where was he taking her brother? Tanjiro seemed to be just as confused as well. Muzan laid out thickly what he was doing. “Let us see if you’re immune to the sun, Tanjiro… If you are, then I can leave and deal with the others… I have to rebuild a decent portion of my rankings after all. I am fortunate that all that the corps managed to accomplish was killing Nakime, and that was all. Although that was largely on me for not realizing you might have plans to deal with her. But still not a terrible loss… The corp members are all dead, after all…”

Tanjiro grunted in dread as he began to try and pull away. Nezuko started to try and get over to her brother as well. She crawled in agony. Her body was in intense pain. But demons within the rankings still lived? They hadn’t been able to kill Upper Three, Two, or One? They only managed to kill one of the ranking? That was horrible! How did this happen?! How did they lose like this?!

Muzan got over to the doorway and forced Tanjiro’s upper body into the sunlight. He grunted and snarled in the vain attempt to pull away. But being in the sun revealed one thing. Tanjiro was immune to the sun. Muzan’s shoulder muscles tensed in joy. Nezuko tried to get up and try to push Muzan into the sunlight. She was unable to, though. Tanjiro had been tossed back inside the building. He wasn’t able to stand up before he was grabbed by yet more tentacles.

Nezuko couldn’t get up. Her body refused to cooperate. She gasped in pure fear and disbelief. “T-Tanjiro!”

Muzan stood behind Tanjiro. The realization about what was about to happen sinking in. Tanjiro looked at Nezuko with a soft look in his eyes. He knew he had failed. He knew that there was nothing he could do to save Nezuko. He was going to die, and he could do nothing to stop it. He at least could say goodbye and express his remorse. Tanjiro’s voice was the softest and clearest it’s ever been. “N-Nezuko…” I’m sorry…”

A large maw had appeared from Muzan’s chest and bit off the top half of Nezuko’s brother’s body. The lower half of his body crumpled to the floor with a sickening splat. Blood and organs spilled from the husk that once was Tanjiro. With the initial bite, blood had splattered and gotten all over Nezuko, who was in complete shock. The blood from the lower half of Tanjiro pooled around her hands. Muzan then grabbed the rest of Tanjiro and consumed it all in one bite. Leaving almost nothing left. The only remains of Tanjiro were blood and a few random pieces of his intestines. Nezuko could only lie there and stare as she tried to process what she had just witnessed.

Muzan stepped over and knelt down in front of Nezuko. The teen recoiled, feeling the demon king’s hand on her head. He was rubbing it in the vain attempt to soothe Nezuko. He was probably only doing it to have Nezuko be calm when he finally leaves with her. Nezuko couldn’t be made to meet this monster’s gaze. He just killed her brother! He hurt her horrifically! He killed her entire family as if they were inconsequential! How could she ever look at this monster ever again?!

Muzan didn’t seem to appreciate that. He slid that same hand so that it was underneath Nezuko’s chin. He forced the girl to look up at him. His eyes were glowing as his hair started to turn back into its raven color. He was smiling in complete victory. He knew he won this war, so why not relish in the light? And why not collect the spoils of this war? Which is to say that it was Nezuko. The demon king cooed out. “I'm awfully sorry that you had to witness that. But I had to eat your brother. He’s been a thorn in my side for a rather long time. He also proved to be immune to the sun, just like you. The difference is that I would rather you be alive. Tanjiro, I don’t care one bit about…”

Nezuko was pulled up to her feet. She could barely force herself to remain on her wobbly legs. It was mainly Muzan’s efforts to keep her standing up. He looked deep into the teen’s eyes. He didn’t have one regret about anything that he’s done. The demon king tried to speak politely. It was a miserable attempt, though. “Don’t you worry one bit though… I swear that I will never do that to you… I’d rather you be in relatively good condition…”

Nezuko didn’t even react when Muzan kissed her briefly. It was an emotionless embrace. It was solely a way to show Nezuko that she now belonged to the demon king. The demon king stood up to his full height. Nezuko was still firmly in his grasp. He spoke happily as if he hadn’t just killed hundreds, including Tanjiro. “I believe it’s time for us to take our leave. I have to handle the few other compatriots that remain. I need to give the blessing of immunity to the sun. They are my most loyal demons; they deserve it. After all, it was because of one of them that you were able to realize that your brother could provide me immunity to the sun… Let's be off then, shall we?”

Nezuko didn’t make a noise or resist. Her mind was too broken about everything that she had just seen and felt. What can she even do anymore? How can she even dare to begin to think of a way to kill Muzan? How can she continue to live on when everyone else has died? She was a miserable failure in every way. Muzan picked up Nezuko in a bridal carry. He stared down one more time at the teen.

Muzan’s eyes were glowing in what could be interpreted as affection. How disgusting. One thing Nezuko could confidently say was that she will never grow to like this monster. He deserved nothing. He didn’t deserve an ounce of attention from Nezuko for everything he’s done. The teen watched the demon king’s face as he began to walk to the outside. Muzan got to the doorway and hesitated for a second. He breathed a calming puff of air.

Without much fear, he stepped out into the sun, completely unaffected by the golden rays.

Notes:

So this might stay a one shot BUT I will say that in this au I have cooking in da mind that Kokushibo, Douma, Akaza, and Kaigaku still live. I might do stuff with that I'm not entirely sure.