Mikako decided to move to Hokkaido due to her husband's work.She says that her best friend, Junko, will give her a farewell party, so she decides to stay at her house.While she was enjoying talking about old stories, Junko's son, Naoto, came home and had a good time together.Naoto, who is fascinated by Mikako's adult charm, sees Mikako taking off her clothes in her dressing room that night to take a bath.Mikako, who noticed her gaze, began to gently seduce her in her usual beige underwear, even though she was drunk with alcohol.