Gantz:O

Death isn’t the end for those pulled into Gantz’s orbit—revival comes with a price, and survival depends on clearing the missions dictated by a mysterious black sphere.

Masaru Katou, a courageous, kind-hearted student, is fatally stabbed while heading home to celebrate his younger brother’s birthday. He regains consciousness in a cramped room overlooking Tokyo, surrounded by other strangers who are just as confused. There’s no time to adjust: Katou is given a weapon and abruptly transported to Osaka with a blunt directive—hunt down and kill any aliens they encounter.

Alongside the elderly Yoshikazu Suzuki, the acclaimed idol Reika Shimohira, and the seasoned yet icy Jouichirou Nishi, Katou is forced to confront terror and brutality in a lethal game where every choice can mean life, death, or the chance to return to the family waiting for him.