Gantz, Fire Punch Recommendations
The emotional and physical hurt are thicc as hell in both of these manga. Very violent and full of gore, though Fire Punch is a good bit less sexual. Both teenage boy protags deal with feelings of guilt and answer the consequences of their own selfishness in a world in which they feel forced to kill due to incredibly powerful, mysterious forces acting on a large scale. Both manga disrespect plot armor: loved characters *will* be lost.
Lots of crazy shit, good drawings, and general kino
Both manga have awesome fight scenes and both nihilistic