Campus Bully Protecting Flowers

I'm actually a reborn big shot? Then shouldn't I do something different from others? Alright, what ordinary people can't do, I must do. Hmm, how about marrying thirty wives first? No? Well, it has to be done! Wait, what is this thing? Star River Brain? Can it be eaten? Huh, it can't be eaten, but it can enhance my strength, teach me infinite knowledge and abilities... Damn, this is a treasure!