let's give him a chance, I mean his practically powerless, his still a kid after all
I'm honestly wondering if he's going to end up being an antagonist this point. 2/3 of the male leads have a bad ending indirectly related to him and his actions. The MC could work with her brother to make sure they don't have bad ends ... or she could work against the brother to change their bad ends. Constituting that the brother hasn't really shown up in the story yet and we readers don't have very much of an attachment to him I'd say that the probability of the story going the direction of bro being a bad guy is getting larger and larger.
Actually the one i don't like the most is adrianna's elder brother, he has done nothing so far, and if he comes back and starts to demand this and that i'm literally gonna lose it