it is not clear but he's most likely dead since it's implied that he was hit by a car when he's chasing sangwoo.
Ohhh I see thanks bruv! Hopefully mans can live a better afterlife.
There’s a few theories about this.
1. All four of the characters get a sad ending. Sangwoo dies in the hospital. Yoonbum gets run over. And the cop (I already forgot his name) is the one who runs over Yoonbum.
2. Sangwoo dies. Yoonbum nearly gets hit by the car and survives. The lesson driving the car was the cop and he helps yoonbum get help.
3. All of them are alive. Sangwoo was never actually been confirmed to have died. Yes, we saw his ashes but that doesn’t mean it was his. Or even if the ashes were real.. there’s a whole theory about that.
Did bum even live in the end?