Ema, who was active in the entertainment industry in Tokyo, suddenly announced her retirement and was living a decadent life at her hometown. One day, she reunited with her nephew after several years. He was a virgin and had been masturbating all this time. Unable to contain his excitement at seeing his sister's braless, vulnerable appearance, he couldn't help but attack her, and they ended up having sex. Ema, too, enjoyed the rare sex and reached a climax, and they continued to have sex multiple times after that.