Taiyô wo nusunda otoko (1979) AKA The Man Who Stole the Sun

A high school science teacher builds an atomic bomb and uses it to extort the nation, but cannot decide what he wants. Meanwhile, a determined cop is catching up to him, as is radiation poisoning.

Director: Kazuhiko Hasegawa. AKA 太陽を盗んだ男 / The Man Who Stole the Sun
Writers: Leonard Schrader (screenplay) (as Renâdo Shureidâ), Kazuhiko Hasegawa (screenplay), Leonard Schrader (story) (as Renâdo Shureidâ).
Stars: Bunta Sugawara, Kenji Sawada, Kimiko Ikegami, Kazuo Kitamura, Shigeru Kôyama, Kei Satô, Yûnosuke Itô.
Cinematographer: Tatsuo Suzuki (as Daruma Suzuki).
Composer: Takayuki Inoue.