wow, I'm jumping into something I recently started to read aren't I? xO
Anyway, Gantz is a fairly epic manga filled with action, even though a lot of stuff is really inappropriate later on, but it is really good even if you omit it.
MUSCLE RIDER! [/insidejoke]
It is has rather detailed gore, and hand-to-hand with gore is his beloved and business partner: woman's breasts and things around that inappropriateness (xDDD), but that is partially to keep it realistic, even though why people in High School would go "that far" is beyond me. @.@;;;
Drama is around and 'shines' somewhat frequently, but nothing to kill everything else.
P.S. Tragedy is a large factor of doomity doom and its funny-ness is thin, but it is still a good read.