Nakano, a job-hunting student who lives alone, falls in love at first sight with Mari, a full-time housewife who he meets at a nearby pub one day. After that, when we met again by chance, we exchanged her contact information and decided to drink at home. Their relationship deepened. Nakano gave Mari a duplicate key, and when Mari left her husband for work, he went to Nakano's house with her shopping bag in hand. And she spends a close time with her husband, trying to distract her from her loneliness, but when Nakano gets a job, their relationship changes.