Gantz omnibus volume 1 - Hiroya Oku

An erotic, science-fiction horror epic, Hiroya Oku's Gantz is a sensation in Japan, setting the bar for outrageous, shocking, and bizarre manga, not for children or the easily offended Over 650 pages of mayhem and madness Tokyo teens Kei and Masaru are struck dead by a subway train but awaken in a room with an ominous black orb that gives them weapons, suits .

and orders.

Fighting and endless stream of bizarre alien monstrosities in a deadly game, will they win their freedom or die for the final time?.