following
Is it this one:
http://www.mangago.me/read-manga/sora_o_daite_oyasumi/ ?
I could be wrong tho
sorry, it isn't yaoi, it's not even related to romance, but thank you!!!!!
http://www.mangago.me/read-manga/dokgo/
I maybe wrong but the plot sounds pretty much similar
Following
OMG YASSSS THANK YOU SOOOO MUCHHH, I HONESTLY LOVE YOUU SOOO MUCHHHH
Haha you're welcome well enjoy (^^)
so what happened was there were 2 twin brothers, 1 brother was a delinquent and the other was like this nerd type guy who goes to school, good marks 'n shit. the nerdy brother died because of bullying 'n sum shit, the father died as well and the mom went mental I think? so then the brother who is the delinquent wanted to get revenge for his brother, so he became him and started sum shit in school.