Mina, a chaste housewife in her second year of marriage. Living with a kind and hardworking husband. The only complaint was that the bland type of husband was not very active in the marital life at night. In the next room of the same apartment, a middle-aged man named Ikeda, a taciturn, reticent, and cowardly craftsman, lived. A neighbor man who always greets you but only returns it in a friendly manner. However, Mina, who is frustrated, sluttifully wets her crotch with the smell of male sweat that he wafts. And one day ...!