One day, Kenji, who lives alone, meets a married woman, Tomoki, at a local izakaya. After a falling out with her husband, she ends up drinking with him at a table... This leads to a friendship between the two, and before long they are physically intimate. Kenji gives Tomoki a spare key to his house, and when her husband goes to work, Tomoki starts heading to Yuki's house with a shopping bag in hand. To ease the loneliness of their misunderstanding, the two begin spending intimate time together in the younger man's room...