Keimi, the wife, moved into this apartment in her second year of marriage due to her husband's transfer. Coincidentally, her college friend Tomoko's ex-boyfriend lived next door. As they reminisced, Keimi, who had secretly harbored feelings for Takashima, ended up getting involved with him. Keimi was seen by the landlord Okada, who then blackmailed her using this as evidence. Keimi's days of being demanded for physical relationships by the apartment residents began. However, Keimi started to feel new sexual pleasures...
