5 years married. Her husband is obsessed with his work and has a delicate relationship with his stepchild, Kazuyuki. His wife, Maika, was frustrated with her boring days. However, by chance, she begins to have a lewd relationship with Kazuyuki's friend, Kenji, and regains her charm as a woman. Secrets with young people who are as far apart as parent and child have become a daily pleasure for Maika. One day, Maika notices that Kazuyuki seems to be saying something, so she takes the plunge and visits him in his room.