Wut if this black hair dude is not the one who rape him?? Hmmmm?

I'm thinking he was drugged and he is misremembering, and it was that guys ex who did it

Well, it's unlikely to happen since he wasn't really that drunk when he was raped and it's impossible not to remember the person who raped you so (unless you were drugged etc)... And that time the black hair guy was totally drunk so he probably forgets about it.. but that's just my assumption lol. Who knows ╮(￣▽￣)╭

No, they did rape each other.

I think akamine mistook utsuki for his ex (the one in flashback as he also seemed to remember him while he saw utsuki leave his house)or smthng and did that.
I've got praise this manga for actually showing the effect of rape and not romanticing it.Cant get akamine's laughing face while he raped utsuki out of my head I'm gonna have nightmares today