Kyoko is a beautiful and well-educated second wife living in a mansion. Her relationship with her husband, Yuichi, a company president, has cooled off. Frustrated by her daily frustrations, Kyoko takes a lover and secretly has sex with him when her husband isn't looking. One day, Yuichi becomes suspicious and receives a report on an infidelity investigation. Takai, the butler who has worked there for many years, proposes the clever idea of ​​putting a chastity belt on Kyoko and keeping her under control, but... Exclusive actress Nana Aida plays a seductive and noble lady in this romantic AV series that evokes nostalgia!