This is an online novel right? I remember someone saying that before. Anyway, yes they are related (uncle - nephew), yes they have a child together (the child Soo-ha thought was Haewon's kid with the woman) and yes they're all red flags ( ̄∇ ̄")
So the kid living in their old apartment is Sooha’s son? So they had a kid together. It makes sense since they mentioned that Sooha’s in the mental institution for 5 years already.
This is an online novel right? I remember someone saying that before. Anyway, yes they are related (uncle - nephew), yes they have a child together (the child Soo-ha thought was Haewon's kid with the woman) and yes they're all red flags ( ̄∇ ̄")