Sangwoo is always terrifying
Most of Sangwoo's popping up in places freaks me out (those eyes and even his smile), but I have to admit I actually laughed out loud in chapter 14 at Bum's hallucination in the store. It felt more like Bum caught Sangwoo peeping rather than the obvious trauma-induced hallucinations that he's been suffering from. Sangwoo always concerns me because I can never tell what he's thinking (props to the author for making him extremely difficult to read), but I will say that he has a strange charm to him (which is probably why he's such a great predator - very Ted Bundy-esque). I find him entrancing, and he scares the hell out of me. It's no wonder why he hasn't been caught up to this point and why Bum is having such a hard time reconciling his deluded fantasy of Sangwoo to the very terrifying and twisted reality of his true character.
Fucking Sangwoo. My gosh. Where do I begin. I mean sometimes he's hot, sometimes he's sweet, sometimes he's just fucking terrifying. But I just have to admit he is possibly the creepiest character I have ever read about. Him popping up in random places manages to scare the hell out of me