Nanami, a busty wife living in an apartment complex, suspects her husband, a businessman, of cheating after seeing him frequently texting someone. One day, Nanami witnesses her husband walking with a young woman. Feeling frustrated and frustrated, she goes crazy masturbating, and through the open window, her eyes meet with a middle-aged man next door. The man kneels down and denies he meant any harm. The two, who were never meant to meet, end up in an affair so passionate that they end up sweating after Nanami witnesses him masturbating.