Nao was sexually frustrated. Her husband was busy and they hadn't had sex for a while, and her nephew, who was staying with her, was obsessed with watching adult videos instead of studying, which was also stressing her out. One day, Nao reached the peak of anger and declared that he would get rid of all the adult videos scattered around his nephew's room. In order to protect his treasure, the nephew tried desperately to persuade him, passionately talking about the greatness of adult videos, and somehow the two of them ended up watching one together... Nao's expression changed when he saw adult videos for the first time. He looked at his nephew with an excited look on his face.