Responses
All your theories got me thinking bro. Mind blown here.
I was wondering about a few of those questions as well. I think a lot is still unclear to us, and either koogi will give us those answers or leave it vague and up to interpretation 0; I'm also interested in the gap of how/when exactly did Sangwoo become the sociopath he is.
So did Sangwoo's father actually abuse his mother or was it just a delusion his mother planted in his head? Or was the one who abused them not the father but the guy she was cheating on him with? Or did he abuse her because she kept poisoning hi? (Ingesting rat poison can cause hallucinations, dementia or brain damage which I'm suggesting is behind him attacking Sangwoo's mom before dying.) Or what happened to him? Because he seemed like an alright person. Did the toll of how mentally ill the mother was make him stressed and abusive over time? Or was he an asshole to begin with? I can't tell.