Gantz was a work with a somewhat old-fashioned art style, but wildly imaginative ideas.
Even that dated style had been polished up by the 2016 CG film Gantz: O.
The story began with Kurono, an ordinary high school student who was somewhat willful and selfish, yet still retained kindness and courage deep down. While waiting for the subway one day, he ran into his childhood friend, Kato Masaru.
Influenced by Kato Masaru, he jumped down from the platform with him and entered the tracks to save a drunk who had fallen onto them. Then the two of them were both struck dead by the train.
Yet after dying, they were transported into a sealed apartment room. The apartment offered a view of the outside, even of Tokyo Tower, but it was impossible to leave. They could not even touch the walls or windows, as though they had been isolated by space itself.
Through a black sphere in the room called GANTZ, they were ordered to endlessly repeat missions to find and kill aliens. Whenever they completed a mission, the apartment door would open, allowing them to return temporarily and rest.
Depending on how each mission went, they could earn points. Once they reached one hundred points, they could request to have their memories erased and truly leave this place, revive a recorded teammate, or upgrade a weapon or piece of equipment once.
The revival here was different from revival in the traditional sense. It was a complete cloning of a new body from the most fundamental particle structure, with even the folds of the brain and its electrical signals reproduced exactly. All bioelectrical signals remained fully synchronized, creating a "copied revival"!
There had even been absurd cases where the original body involved in a real-world fatal accident had not quite