S1, E1: Yaiba Kurogane's life goal is to become a true samurai and has been training hard in the jungle with his dad, Kenjuro, day in and day out. But training takes an unexpected and sudden turn with Yaiba and his dad, along with their tiger companion from the jungle, Kagetora, ending up back in Japan. Turns out Kenjuro has a friend who happens to be a member of the esteemed kendo family known as the Mines. The Mines agree to take in Yaiba, but Kenjuro's friend's daughter, Sayaka, is not as amenable. Yaiba's completely odd ways have Sayaka's patience wearing thin. It's when Yaiba visits Sayaka's school and meets the talented kendo practitioner Takeshi Onimaru, that tensions really rise. A fateful meeting is about to unfold.