A single living room where a wife who received the key was sent out until the graduation of a male student. Imai-donna (soybean curd)

One day, Arita, who lives alone, meets a wife, Kuwana, at a nearby izakaya. I ended up drinking with my husband at the same time as her, who was in a hurry to get along with her. This led to her getting along well with him, and he soon became involved in a series of physical relationships. Arita gave him the key to his home, and when his husband came to work, he started going to Arita's house with a shopping bag in one hand. And, as if to confuse the loneliness of the couple's misery, he began to spend a dense time in his younger room.