Responses
Spoilers
The mom died and the senior went to jail for murdering her. The mc lives with his "father" now and is likely plotting a murder-suicide ("I'll be there soon... with my new father" > he says that as he looks at the sky, presumably talking to his dead mother and the "there" refers to heaven.
Ooh okay I understand now.. thank you for explaining!
You're welcome!
Junsik kinda gave me a bit of a sangwoo vibe also wtf was that ending? Can someone explain What just happened ???????????