Is there a part in particular you didn't get?? :)
spoilers:
sangwoo, after being burned badly, is hospitalized. yoonbum keeps visits him but learns that an old woman smothered him due to the sounds he made at night that annoyed her. did he deserve it? yeah.
bum supposedly dies in the last chapter after truck-kun makes a run for it.
i guess the ending was supposed to bring justice to these criminals. sangwoo was basically murdered while suffering to pay for all the awful shit he did, and while yoonbum was partly a victim, he also committed crimes under sangwoo's guidance that wouldn't make him completely innocent. that's why his death was never explicitly confirmed visually, since he was innocent while also being guilty, and so was killed quickly by a truck while also being mentally pained by all that he went through and the death of sangwoo.
please can anyone explain about the ending of killing stalking? i really don't get it. help. mee