I really can't stand behavior that would punish someone for having something like a mental illness or acting like a child when they are one rather than punishing them for behavior that hurts others Those kinds of parents are SO immature. And I've seen too many of those kinds of abusive poss. Kaythxbainow.
You have a point in this, I get that his Dad did bad thing too, cause he started beating that kid up, instead of try to talk to him like an adult. Ok, I now know that his behavior is because he has some mental disorder/Illness. But I can't get myself to read it and deal with behavior of that child. I'm not saying that manhwa is bad, cause I didn't said that and I Still like the concept.

I don't like that kid. That Little kiddo is so frustrating...Why is he breaking things and screaming Just because he is Angry that he can't call her in the middle of the night. But man!..You Was Talking to her like 2 hours ago!!
Main character is good and father of that prick too. I like them, but that kid would need better personality.
If there is someone who is Reading novel, will that kid be better later in manhwa? If yes, than i'm glad:)))