Moko will be living alone in Tokyo for only two weeks for summer classes at her cram school, and will be visiting her weekly apartment. For a moment, her life in Tokyo lifts her spirits... but she also feels uneasy about the large amount of garbage littered next to her room. In the room next to the apartment, there lived a dirty brother named Shimonuma who could masturbate continuously even after he orgasmed with masturbation and did not do any post-processing. Moko summons up her courage and goes to Shimonuma, but...
