After a long battle, the humans manage to stop the alien invasion and soon after, it is revealed that it was another, highly advanced alien species that provided mankind with the means to defend itself against the invaders, for reasons they refuse to reveal and calls it a whim. The Japanese also learn of the existence of Gantz teams all around the world. It is hinted that Nishi died, but his death seems to be unclear. Nishi, in the chapter 'The Great Escape', is left for dead by Kurono, vowing vengeance against him and crying out for Gantz and mother for help. At the end, Nishi and Kurono are depicted to be similar, both of whom were despised by their family and were sinister however, unlike Nishi, Kurono has a reason to live. The countdown reveals that there is one week left until some unknown 'catastrophe.'Īt the end of that week, a massive alien force invades the Earth and begins exterminating the human race, while Kurono and his companions try their best to make use of Gantz' advanced technology and weaponry in defense. After several missions, an old participant named Nishi, who knows more than the others about how Gantz works, shows them a 'catastrophe countdown' on the Gantz sphere which the other players were unaware of. The series depicts both the missions and Kurono's regular life, as well as the daily lives of other Gantz players (to a lesser extent).

At the end of the mission, similar to the first time Kato died, he defeats arguably the strongest alien in the series and is laid bleeding on the floor. In a desperate attempt to revive his best friend, Kato fights the one hundred point alien Nurarihyon which obliterates both Osaka and Kurono's team.

Kato becomes the center of attention in the manga and his quest to revive Kurono.

As the series goes on, the rules of the missions change they can now be seen by regular people, the aliens they encounter are increasingly more powerful and dangerous, and they participate in a mission with another Gantz team from Osaka.

Manga gantz bahasa indonesia translate