Yohei is a large man who works as a town courier. His weakness is his slowness, which his colleague Densuke always makes fun of him for. One day, a young samurai asks him to deliver a letter to the daughter of a tokoroten shop owner on a back street on the outskirts of town. When he arrives, he finds a tokoroten stall, and a young woman named Orin is running the shop all by herself. As Yohei hands the letter to Orin, he is captivated by her lovely body.