The brother is really a pragmatical manipulative prick, and it make me feel a bit weird. I mean, if he was the hero, I would love it, but here, the story is supposed to be focused on the main couple (and the more chapter we get the more I feel like we won't see a good ship with the brother before some character development), so, I don't know how the author is planning to use him in the long run without making him too unsympathetic or making him steal the spotlight too much...