Jun Sakurada is a hikikomori, or a boy who has decided to isolate himself from the outside world, and legally does not go to school. In his time, Jun orders unorthodox items online, only to return them for a refund. One day, he receives a paper, asking whether or not to wind. After Jun carelessly accepts, a mysterious box appears with a doll inside. This doll, being able to move and talk, introduces herself as Shinku, the fifth doll of the Rozen Maiden. Jun enters a contract with Shinku, becoming her medium.

Hinaichigo now lives with Jun and Nori, becoming Shinku's servant due to her loss in the Alice Game. Jun and Nori try to figure out what "unyuu" is, which is what Hinaichigo calls her favorite food. Meanwhile, Suigintou, the first doll of the Rozen Maidens, appears, encountering Shinku and Hinaichigo.