JUQ-618 Here comes Nao Murai, who looks great with short hair. A married woman who received a spare key was impregnated in her single apartment until the male student graduated.

Yutaro, who lives alone, one day meets a married woman named Ai at a nearby izakaya. She is at her wits' end due to a fight with her husband, and they end up drinking together. From that point on, they become close, and eventually start a physical relationship. Yutaro gives Ai the key to his house, and she starts coming over with a shopping bag as soon as her husband leaves for work. They spend intense time together in his room, using the loneliness of their missed encounters…