Yasutaka Tsutsui
All You Need Is Kill is a Japanese science fiction light novel by Hiroshi Sakurazaka with illustrations by Yoshitoshi ABe. The novel was Sakurazaka's breakthrough science fiction novel, earning wide praise from fellow novelists including Yasutaka Tsutsui and Chōhei Kanbayashi and was entered in contention for the Seiun Awards. The book was published in Japanese by Shueisha under their Super Dash Bunko imprint in December 2004, and was later released in English by Viz Media under their "Haikasoru" imprint. "All You Need Is Kill" follows a soldier named Keiji Kiriya, who, after dying in a battle with extraterrestrials, is caught in a time loop that makes him live the same day repeatedly, allowing Kiriya to improve his fighting skills.