A lewd stepfather who has retired and is now free to join his wife

Yuna lives with her father-in-law Shinichi at her husband Koji's parents' house. He began to give his heart to Shinichi, who always cared for him, but behind Shinichi's kindness there was a wolf's face... Shinichi sniffs at Yuna's frustration because her husband's work is busy and she's not getting a baby, so she plans to take this opportunity to turn Yuna into a sexual doll that she likes...