Shuranosuke Sakaki, a ronin who wears the mark of two crossed scythes, is hired by the Nakura Clan to rescue Princess Mayu from the Seki Ninja. During his quest, he faces the Seki Ninja's deadliest assassins until he succeeds in rescuing Princess Mayu. Upon Sakaki and Princess Mayu's return, Lord Daizen orders the execution of Sakaki to clear his involvement with the princess, but Princess Mayu stops the execution before she suddenly collapses and coughs blood, having been poisoned by the Seki Ninja. Sakaki leaves the Nakura Clan without his reward. Later, Sakaki crosses paths with Marouji, an assassin who kills his targets with his jujutsu skills.