Ninkuu: Knife no Bohyou

Fusuke, Aicho and Toji carry a fallen comrade’s knife to his sister Makoto. They find her in a village terrorized by Rasenryu’s pirates, who repeatedly raid the settlement and take its residents captive.

Makoto refuses to submit, although the other villagers have lost hope of resisting. When a fresh raid leaves her a prisoner too, the friends head for the pirates’ island stronghold to rescue her and free the captives.