A married woman who has been working as a swimming instructor at a fitness gym for six years. She started working part-time at the gym during her student days and ended up marrying a salaryman who used to go to the same gym. Her husband, who is eight years older, stopped going to the gym after they got married, and his appeal as a man has since declined. Their marital relations have also decreased significantly. She gets aroused seeing muscular men at work and has even masturbated in the gym's restroom. Unable to suppress her desires any longer, she delved into adult videos…
