The manga series Gantz, created by Hiroya Oku, began serialization in the Japanese magazine Weekly Young Jump.
The Gantz anime television series premiered in Japan, adapting the early volumes of the manga.
The first live-action film adaptation of Gantz was released in Japan, bringing the franchise to the big screen.
The sequel live-action film, Gantz: Perfect Answer, was released to continue the story from the first movie.
Kurono Kei and Kato Masaru die in a train accident and are revived inside the Gantz room, where they receive their first mission to hunt aliens.
Kurono, Kato, and their teammates complete a dangerous mission in Osaka, gaining experience and some initial teamwork skills.
New players including Nishi join the game, revealing different philosophies and survival tactics within Gantz missions.
Kurono begins to show signs of leadership and strategic thinking during a hostage rescue mission.
A large-scale invasion by aliens threatens Tokyo, forcing Gantz players into a massive battle for survival.
Kurono and Kato survive an alien city and return to Earth with valuable insights.
A mysterious black Gantz ball appears, introducing new high-level missions and challenging the players further.
Kurono leads the players into a climactic battle to defeat the alien leader and end the invasion.
