Gantz Omnibus Volume 12

Hiroya Oku's Gantz reaches its cataclysmic conclusion! 

While the truce with the alien invaders crumbles, Gantz warrior Kei races to save his beloved Tae aboard the alien mothership before the goliath vessel is consumed in the rapidly spreading destruction. But beyond Tae's desire to reunite with Kei is her hope that Kei can prevent a Gantz-led genocide of the aliens! Collects Gantz volumes 34-37.