"I want to change my mood..." Keiko (Momo Ishii) was confused when her husband gave her lewd underwear. Then, while her husband was on a business trip, she secretly put on the lewd underwear in front of the mirror and looked at herself, remembering for the first time in a long while that she was not just a wife but also a woman. However, her lewd underwear-clad figure was seen by the man next door from the balcony. Keiko struggled with the shame of being seen and the guilty pleasure of being noticed by a man other than her husband, unconsciously beginning to feel a throbbing between her legs...
