Reika visited the boarding house of her son, Kazuya, who went to Tokyo to go on to school. Then Kazuya quickly disappears from his part-time job, and ends up having dinner with his housemates, Hatanaka and Kashiwagi. Her maternal nature, kindness, and ease of getting carried away make their desires swell, and they push her down with the momentum of alcohol. Unable to resist the pleasure she experienced for the first time in a long time, Reika surrendered herself to the pleasure. A young man's irresponsible intense sex that doesn't think about what's next will steal your heart, and you'll shake your waist.