Aki was fed up with her life at home, trapped between a workaholic husband and a selfish mother-in-law. The only place she could truly relax was the manga cafe she visited while shopping, where she could buy an hour of solitude for 380 yen. One day, she met a man there. Through a chance encounter, they grew close and developed a lewd relationship driven solely by desire. Engaging in extraordinary acts with a man whose name she didn't even know, in a space where making noise was forbidden. Living an ordinary housewife's life, Aki began to drown in this abnormal thrill...