After 12 years of marriage, Maki is trapped in a cold, loveless relationship. One day she is approached by Kuroda, the childhood friend who had a crush on her 20 years ago. He has grown into a handsome, muscular man, and when he visits during her husband’s absence, she lets him use the shower. A glimpse of the huge cock that replaced the tiny one she remembers from their childhood leaves her struggling to control her desire...