Keiju Kobayashi as Dr. Tadokoro

Hiroshi Fujioka as Onodera Toshio

Ayumi Ishida as Abe Reiko

Tetsuro Tamba as Prime Minister Yamamoto

Shōgo Shimada as Old man Watari

John Fujioka as Narita

Andrew Hughes as Australian Prime Minister

Franz Gruber as United Nations Committee member

Nobuo Nakamura as Japanese Ambassador

Haruo Nakajima as Prime Minister's Chauffeur

Hideaki Nitani as Dr. Nakata

Isao Natsuyagi as Yuki

Yūsuke Takita as Assistant Professor Yukinaga

Tomoyuki Tanaka as Government official (uncredited)