Shiro Kaieda is appointed the captain of Japan's first nuclear submarine, jointly built by Japan and the United States in top secret. However, he and his 76 crew members go rogue in this story that delves into themes of nuclear war, international politics, and world peace.

War

Takao Osawa, Hiroshi Tamaki, Aya Ueto, Yusuke Santamaria, Tomoya Nakamura, Aoi Nakamura