I've never been the kind of person to give abusers a pass because they have a tragic backstory, and Jihyun is no exception, fuck him. I mean, good for him if he becomes a better person, but he can never undo the trains he caused and the only compassionate thing he could do for Chiwoo at this point is to leave him alone.
Some things are so cute you just gotta bite em. But seriously, the looks exchanged between Seung and Tirano afterwards are top tier visual comedy. 10/10