In 1604, Miyamoto Musashi attacked the Yoshioka family at their dojo and defeated master Seijūrō and his younger brother Denshichirō in two duels. To save their reputation, the Yoshioka family decides to fight back with all 100 family members and hire an additional 300 samurai. Now Musashi sets out to defeat all 400 enemies in his most famous battle.
Kanda Fuyuki is a world-famous pianist who has been keeping his life busy after his wife's death. One day, Fuyuki meets an unsold cat, Fukumaru, at a pet store. Fuyuki is not good with animals but decides to get Fukumaru after being attracted by it. Since then, Fuyuki's life changes as Fukumaru starts living with him.
