Having just passed university, the student immediately went to the city to find a room to rent. Unfortunately, the place he was staying was right across from the house of the lecherous neighbor Akagi. Because the two houses are shielded by only a glass panel, he can see everything the neighbor does, including erotic actions such as rubbing her breasts and buttocks against the glass or when she masturbates. adultery. Until one day, when her excitement reached its peak, she directly called him over and continuously provoked him to secretly have sex with her while her husband was away. Because of what he had seen before and at this age he really wanted to discover mysterious things, the male student easily agreed and helped her reach climax in just a very short time.