I was a virgin and a dull college student, and I couldn't find a girlfriend, so I was living a lazy life talking about porn and graduation thesis with my friend who was also a virgin. One day, when he goes to his house with his girlfriend's friend, he runs into a couple who are moving. His wife's name is Mina, and she's probably an H cup, but she's overflowing with pheromones. What's more, she could hear the couple's violent activities night after night, adding to her frustration. A few days later, I decided to give Mina-san, who had lost her keys, to her home...