Casts
Hiroshi Koizumi
Shoichi Tsukioka
Keye Luke
Shoichi Tsukioka (voice)
Setsuko Wakayama
Hidemi Yamaji
Minoru Chiaki
Kôji Kobayashi
Marvin Miller
Koji Kobayashi / Narrator (voices)
Masao Shimizu
Dr. Tadokoro
Mayuri Mokushô
Yasuko Inouye, Koji's girl
Minosuke Yamada
Chief of Civil Defense
Takashi Shimura
Doctor Yamane
Sonosuke Sawamura
Foreman Shibeki
