A popular documentary series where Koichi Takahashi, who calls himself "the married woman's heart lover," filmed a one-night stay with his wife's female friend at his single-person assignment apartment. A compilation of 6 works released from July 2023 to January 2025. Even though the landlord shouldn't be coming back... While it was an accidental encounter, the married woman who became friendly with Director Takahashi consulted about her husband's desire to be cuckolded. When she starts practicing, her cheeks turn red and she orgasms, and when night breaks, the married woman asks for it... and so on, a 240-minute work featuring 6 married women who have sex in a happening-like situation with their housewife friend's husband.