I mean im not entirely against him being the ML like i wouldnt be mad if he was but it feels a little incesty if that makes sense ( ̄へ ̄)like we already established that their like siblings so I feel like it would feel odd if they ended up together, I like the little found family(ish) brother and sister dynamic they have and i hope it stays that
Also i heard that the weird guy from his dreams is the ml i hope we know more about him in future chapters!!! (๑•ㅂ•)و✧