After taking a year off, I got into university and finally got to live alone. Just as I was getting everything in order, my nosy mother told me it was important to get along with my neighbors, so she took me to a neighbor's house. I opened the door, exchanged greetings with the woman next door, and when I looked up, I saw that it was Ms. Morisawa, my private tutor from my school days... I was Kokoro to see that she had become so beautiful and seductive when I met her again after such a long time. Then, on the night of the day I moved, I heard the moans of a married couple making love from the other side of the thin wall...