
Like what they mean by karma, vessels, and all that. I'm way past the age of being able to be patient enough to read 500 chapters of people speaking cryptically about shit that could easily be explained by the villains or the heroes in a cutaway scene for the sake of the reader, like how the Eye of the Moon plan was laid out by Tobi at one point in Naruto.

..of what's been happening the past 5 or so chapters ( or whenever the mangaka resumed after their health-related break). Maybe I'm stupid and things just aren't clicking, but could someone explain to me what Worick is doing with that Mafia Don and why he let Nick go? I'm probably missing something...
Horrible things aren't happening, big whoop. Horror and shock lose their effectiveness if that shit happens every chapter. Sangwoo has obviously gotten to a point where he sees his mother in Bum, and he doesn't "feel" like killing anyone right now. It may just be him repressing his urge to kill, it could be that he doesn't feel like it (killing to him seems to be on a whim and 'because I can', but he's not interested in doing it right now). I'm a horror/psychological-mindfuck lover as much as the next person, but horror is best served alongside a facade of normality. That way, when the time comes, it's that much more disturbing.