There's two that I've seen but I can't remember their names right now, I'll try and dig them out for you.
Aight im the GOAT, Golden Complex and Kiite, Ore no Hazukashii Oto (second one is more about watching pee but whatever)
Thank you very much
Pitter patter
This one made me realise I actually don't have a piss kink
Weirdly the piss part didn’t turn me off it was the exhibitionism. They had extremely kinky sex in so many inappropriate public places
Girlies, lads and non binaries in the comment section, is there any yaoi with actual piss kink here on mangago?