A 33-year-old supermarket worker at a provincial city used to be an idol, but could not see a future as a singer. Sick of everything, she moved to a provincial town and met Yoshio, a pet cat she saw at a store.

In 1868, after the Bakumatsu war ends, the ex-assassin Kenshin Himura traverses Japan with an inverted sword, to defend the needy without killing.