The neighbor of the apartment where Mei spends happy days with her engaged boyfriend was a pervert who masturbated while eavesdropping on Mei's interactions through the wall. - Mei is a little sloppy who thinks her boyfriend's shirt is her own and inadvertently wears it. Saeyama, a neighbor who notices this, deliberately sends a package and threatens to take responsibility for Mei, who used it without permission. Mei, who felt unsatisfied at night with her boyfriend, ...... to feel pleasure from Saeyama's forcible sex. * The contents of the recording may differ depending on the distribution method.