[4][5] In a alternate history Japan where the Meiji Restoration never happened, foreign ships are repelled by ancient giant robots called Onigami.

He can't control his fiery energy to become the strongest man, and spends his days taking on fights.

Her actions place highest priority on the Tokugawa Shogun family and the mission, which leads to many conflicts with Keiichiro.

She is a tomboy with an unyielding spirit, but has long lived as a social outcast because she is half demon.

The main mecha of the series is Susanoo, based on the god from Japanese mythology who can turn into different forms depending on who the subpilot is.

The Steam Puppets consist of the Deku, used by the Nagisaki police, and Jokikugutsu, used by pirates led by Maika and the minions of Shigeyoshi.