???

I'm searching for a manga ..I read last year but Forgot the name.
It' was bout two step brothers , older brother works at office and younger studies at uni ( taller then older brother)
The younger bro have sex with girls so that he can forget about his brother but he can't.. at one scene the older bro gets drunk at office party and the younger bro picks him up ..╥﹏╥ I really want to read this manga again but I don't remember the name ..