"I want to change my mood..." Keiko (Isshiki Momoko) was confused when her husband handed her obscene underwear.And while her husband was on her business trip, she secretly stared at herself in her obscene underwear in front of the mirror, for the first time in a long time, as a woman instead of her wife. I was remembering myself.However, she is seen in her obscene underwear from the veranda by her neighbor's man.Keiko, who is annoyed by her sense of shame that she has been seen and her sense of immorality that has been conscious of a man other than her husband, begins to ache in her crotch unconsciously.