
Dude! Are you seriously blaming the bully for your own cowardice? Even after graduating highschool and college, he couldn't get rid of them. I've seen pushovers before but this guy really takes the cake! You're a f*cking adult! Are they gangster or something? His family is in politics? If not what are you so afraid of?! Is it that hard to say no?
Redo your personality instead of trying to change your highschool experience. Bet he's gonna taken advantage of there too. Maybe not since someone is going to protect him now.
But honestly, you won't go far in life with that attitude. One day that itami guy would kill someone and frame him, and he'd just accept his fate and go to jail without putting up a fight.