Yaoi where the seme makes the uke keep his semen in him for the day, but ends up leaking out
http://www.mangago.me/read-manga/kaihatsu_muramura_mode/Chapter 4!
There's also something like that in The Last Lover by Psyche Delico. (⌒▽⌒)
Yaoi where the seme makes the uke keep his semen in him for the day, but ends up leaking out