JordyTos:
Cheese in the Trap (movie and/ or TV show) the guy the girl feels for is one step away from being some type of calculated murderer, in my opinion, and then there's an actual stalker in there as well!
The original webtoon definitely fits this thread, but the drama doesn't give him enough scenes or flesh out his character enough. It also ruined his character by having him leave the girl at the end.
Webtoon Jung would never do that in a million years as he needs Seol like he needs air: She's literally the only genuine relationship he's formed on his own and he'd never give that up regardless of what happens..