Responses
Yes exactly at season 1, at the start of the story.
That’s why he’s been keeping an eye on them, and also warned non of being too close to shin, and that’s why he’s knew the relationship or closeness they both had, and wanted to hurt shin by hurting his most precious person.
Just like shin played him and his son.

Guys who the hell is that old man I genuinely only remember his first appearance and why was he talking abt his kid and wife