Mikako moved to Hokkaido due to her husband's work. Her best friend Junko said she would hold a farewell party for her, so Mikako decided to stay at Junko's house. As they reminisced about old times, Junko's son Naoshi returned home, and they spent a pleasant time together... Mikako's mature allure captivated Naoshi, and that night, he caught a glimpse of Mikako undressing in the changing room as she prepared to take a bath. Noticing his gaze, Mikako, aided by her alcohol-induced state, began to seduce him gently while wearing her usual beige underwear.
