Jason Shiga’s Demon (vol. 1) is a comic about a guy who tries to kill himself but it doesn’t take. There’s a Groundhog Day aspect to the first chunk of the volume while he figures out what’s going on, and then it becomes a pretty funny and gross action book where he realizes that the reason it isn’t working makes him one of the most dangerous people alive.
It’s drawn in a similar style to his choosable-path time-travel comic Meanwhile (and uses the same protagonist) but as the introduction states it is decidedly not a kids’ book. Good stuff.