A married woman, Yui, who has a serious salaryman husband. Her husband's older brother is unemployed and freeloading at his parents' house while looking for a job. In the eyes of her brother-in-law, who spends her time at her parents' house with a sidelong glance at her happy brother and sister, her Yui's body is dazzling. On a sweltering tropical night, her brother-in-law's desire overflowed with sweat at once in the appearance of her sleeping on her sweaty chest.
