I was a virgin and a boring college student, and I didn't have a girlfriend. I lived a lazy life talking about AV and graduation theses with my friends who were also virgins. One day, when I was heading home with a friend, I bumped into a couple who were moving. The wife was called Mina, and although she had an estimated H cup and was plain, she was overflowing with pheromones. What's more, I could hear the couple's intense lovemaking every night, which made me feel even more frustrated. Then, a few days later, I decided to let Mina into my house, as she had lost her key...