Hidesato– the main character of this story. He’s overconfident and doesn’t think things through, which leads him way over his head. He is a man of his word and doesn’t get easily discouraged regardless of the situation.
Ryo-wo– the Dragon King of Lake Biwa who asks for Hidesato’s help to slay his foe. He’s somewhat cowardly, being too frightend to stand up to fight. He is the king of the lake and lives in an underwater castle with Koi as servants.
Omukade– “Human Devouring Centipede”, the great demon centipede of Mt.Mikami. It had devoured Ryo-wo’s children and inhabitants of his kingdom.