Work Text:
You and Childe were working together on a mission for the Fatui. You both have been working nonstop for the whole day with no breaks, and this led to you needing to use the restroom. At the time, you and Childe were in a group of people, so you turned to him and whispered, "Childe, I need to go to the bathroom, can we please hurry up?" He looked semi-concerned at you. A few minutes after you voiced your predicament Childe made up an excuse for the two of you to leave the area.
After leaving, Childe frantically dragged you into an empty alleyway looking hungry. "Right here..." he spoke, sounding rough and rather frantic. You were genuinely confused about what he meant and still desperate for a place to relieve yourself. "W-wh-What?" you respond, visibly confused.
"Do it Right Here... Now" Childe once again demanded, this time with more force. It took you a few seconds to put two and two together, and as soon as you figure out what he means, your face turns tomato red. This time you take to process Childe's demand makes the man impatient and lash out, saying, "WELL, what are you waiting for,, People to find us here?" You were initially shocked and a little hurt by the Harbinger's words, but also snapped you back into reality. You noticed just how desperately you had to go, but when you looked at Childe, you felt utterly embarrassed.
You decided it was better to piss in Front of your colleague rather than pissing in your pants while working. It would at least be a bit less embarrassing. You pulled your pants down, followed by your underwear, and you preceded to squat down. Once you get down enough that you know your pants won't get ruined by your own waist you notice something about Childe that you somehow hadn't noticed before. "Childe why the fuck are you hard?!" You yell in complete disbelief. Childe just staired at you, waiting for something.
Childe quickly determined that you took too much time to go and demanded you to stand up but not to pull your pants up and to turn around. He got close to you, so close that you could feel his erection pressing into you. "If you aren't going to piss right now then I'll make you piss," he leaned into your ear whispering, as he pulled his dick out. He didn't even take the time to prepare you knowing that it was just going to be a quick fuck until you two are able to get a room together. The Harbinger shoved his dick into you causing you to moan out in pleasure, despite being in an alleyway you quite enjoyed getting fucked so roughly.
It only took a few good pushes from his dick to get you to properly release. As soon as you started to pee he was gone, fucking roughly into your hole. He couldn't seem to get enough of you, not caring about if his or your clothes get dirty at this point he just wanted to finish so he wasn't hard the next time someone saw him. As soon as he came he cleaned the both of you up. As he was cleaning you a thought popped into your head 'Childe has a fucking piss kink doesn't he.' "We should do this again sometime," Childe commented. You thought for a moment trying to think of something to say after your revelation "Maybe once we're done we can arrange something."