Responses
That's chapter 8 of this: http://www.mangago.me/read-manga/bousou_kareshi/
Also, I think you mean semen, lol. A stamen is like a flower's dick.
Thanks. My bad for the spelling though.
I am looking for a yaoi manga but i can only remember one part.
That the seme got angry that uke was talking teacher and the seme tied the uke to the infirmary bed and was saying that he slept with the teacher. So he checked with a thermometer to find semen coming out and the seme raped him. After the uke explained that it was the seme's semen from that morning