Kosuke and Rikimaru: The Dragon of Konpei Island(1988)

Dragons are the gods of this island!

Kosuke and Rikimaru: The Dragon of Konpei Island is an action-adventure film following two swordsman brothers who must defend their remote island home when bandits arrive seeking a legendary treasure. Alongside a visiting researcher, Kosuke and Rikimaru face off against the raiders to protect the last divine dragon—a creature whose survival is crucial to maintaining the island's ecological balance. The film blends martial arts combat with fantasy elements as the brothers navigate threats both external and spiritual. Set on an isolated island where myth and nature intertwine, the story explores themes of duty, brotherhood, and environmental stewardship. Tension builds as the bandits' greed threatens not just the dragon, but the entire island's fragile ecosystem and the bonds that hold the community together.