Forgive me... An affair with my stepfather who can't tell my husband

[Attackers' 25th year in its founding! Nakamura Miu finally appears] The long-awaited home. Mami lives a happy married life with her kind husband. However, he felt sad that the time between men and women gradually lost. Her stepfather comes to Tokyo for a medical check-up, and she notices and encourages Mami's gaps in her heart, but Mami's charm makes her unable to control the man's personality...