Guys I need your help!!!

Can someone find this "bl" for me its where these two brothers end up having sex then starting a relationship. One of the brothers works at a place where people use their holes (^////^) and the other brother needed to relief some stress and went to this place and ended up using his brothers booty and didn't know at the time. Then they later find out and they start a relationship. The only reason I want to find this story is bc I just remembered it was my very first manga I read sadly. Thank you