Kosaku Okano

as Detective Tonami

as Professor Karube

as Nakamura

as Nakamura

as Researcher

as Detective

as Yu's grandfather

as Professor Takashi Yabe

as Driver

as Stadium guest B

as Bodyguard

as Reporter A

as Mineoka

as Doctor

as Tanaka Mitsuaki

as Yamamoto's subordinate

as Secretary Kubo

as Shigeo

as Ichimatsu

as Kiyomura Construction employee