OBA-005 My wife cheated on me, so I decided to get revenge on my mother-in-law. Ryoko Iori

Ever since her daughter Kyoko got married last year, Ryoko has been alone and bored. One day, Kyoko's husband Kazuya suddenly visits her home. "The truth is, Kyoko has been cheating on me..." Kazuya suddenly confesses, and Ryoko is left speechless when he is confronted with the truth... However, the infidelity committed by her own daughter cannot be easily erased, and from that day on, Kazuya's "revenge" begins. Kazuya's "revenge" is too stimulating for Ryoko's body, which has been frustrated for a long time...