codingirl's manga / #Oblivious seme(3)

Setting aside the fact that in this world brothers jerk each other off no problem - which is so weird - I definitely struggle with the uke. He's annoying and the way he treated the seme and toyed with his feelings is just meh. I don't get why the seme likes him. Their backstory makes little sense to me - a little boy is mean to you, he dies and you beg your father to save him?? Maybe the seme's a masochist. Would explain a few things.