That some messed up sh*t right there
Waiting for the title too
whew
http://www.mangago.me/read-manga/hebi_no_seikatsu/
Could it be this one? The twin dies tho not the boy that he likes
You are a life saver.
Yes, this is the one I was trying to find.
I knew I was wrong in at least one detail. Thank you :)!
Np, glad to help!
The protagonist has a brother (twin I think) and a boy he likes, and by some unfortunate events , the boy goes in heat and the borther impregnates him and they have a kid. The protagonist leaves his home and finds out years later that the boy he liked died.