Gantz is a Japanese series of live-action action horror science fiction films. The Gantz series is based on Hiroya Oku's manga series, Gantz. The films are titled Gantz, the sequel Gantz: Perfect Answer, and a made-for-TV movie titled Another Gantz. The first film, starring Kazunari Ninomiya and Kenichi Matsuyama, follows two high school students who die and are transported to an alternate world. In this alternate reality, a black sphere gives them a mission to kill aliens.
