"I want to change my mood from usual..." Keiko (Isshiki Momoko) is confused when her husband gives her obscene underwear. And while her husband was on a business trip, she stared at her secretly wearing obscene underwear in front of the mirror, and remembered herself as a woman, not a wife. However, the man next door peers from the balcony in his obscene underwear. A sense of shame of being seen and the sense of guilt that has led to the awareness of a man other than her husband, Keiko unconsciously begins to sting...