Hiroya Oku

After trying to rescue a man on the subway tracks, two teens wake up in a room dominated by a mysterious black sphere that sends them to hunt down and kill aliens hiding on Earth. (imdb)

Before finding out the "Perfect Answer", discover Another Gantz. This film is an alternate perspective version of the 1st Gantz film from the same writing-directing team of the two-part theatrical film. In addition to condensed scenes from the Gantz film, Another Gantz features a new subplot that follows an investigative journalist not included in the theatrical film. Delving deep into the mystery, Another Gantz offers another piece towards solving the complex puzzle that is the world of Gantz. (myasiancinema.com)

Kei Kurono (Kazunari Ninomiya) and Masaru Kato (Kenichi Matsuyama) are summoned by the mysterious black globe GANTZ. They continue the fight against extraterrestrial beings and, as they continue to battle, they become stronger. Kei Kurono opts to keep fighting to survive, but Masaru Kato hates the world which is controlled by violence and refuses to fight. As the two friends finds themselves opposing each other in a continuous game of violence, a critical last choice is to be made ... (asianmediawiki.com)

Two explorations of the Lolita complex. Sushiaki Karasawa, a young teacher at a Tokyo high school, becomes infatuated with Yoshida Chizuru, a 19-year-old student who appears in a shampoo ... (imdb)

Masaru Kato is stabbed to death in a subway station, only to wake up soon after in a strange room, accompanied by a number of people who do not know and become their companions in a strange game of survival. Gantz: O is a spectacular animated film that adapts the arc mythical manga Osaka Hiroya Oku.

Inuyashiki Ichirou is down on his luck. While only 58 years old, his geriatric looks often have him written off as a pathetic old man by the world around him and he's constantly ignored and disrespected by his family despite all that he's done to support them. On top of everything else, his doctor has revealed that he has cancer and it appears that he has little time left in this world. (imdb)