As a virgin and dull university student, I was unable to have a girlfriend and was living a lazy life talking about porn videos and graduation thesis with my other virgin friends. One day, when he heads home with a friend, he runs into a couple who are working on moving. His wife was Mina, and she was estimated to be H-cup and was plain but full of pheromones. Furthermore, I could hear the intense couple's affair every night, which made me feel frustrated. A few days later, she decided to bring Mina, who had lost her key, to her house...