I think we're not given the whole story here. It seems the mom left them because she had somebody else. They are trash parents, Idk get why he is looking for his son and wants to see his grandson too
Yeah, they're stupid parents. But as I've said we weren't given the whole story. In the new chapter, the dad is claiming that his mom left them voluntarily. And he was shocked when he realized that HyeSung blamed him for that. There's just something amiss here
DELETEEE THIS! Why is it that its back again grrr