Tatsuhiko Kido has moved to Tokyo to begin a new, independent life as a student at the Technical School. Kido has a talent for drawing, but he does not aspire to become a great artist. He simply yearns to taste adulthood as far away from his parents as possible. In his small, rented apartment, Kido finds a mysterious hole in the wall where he could see the girl next door’s room. In an effort to warn his roommate about a construction flaw that could put an end to both of their intimate lives, Kido goes to her for a serious conversation about cosmetic wall repairs. A serious conversation didn’t work out, as Ikuno Emiru (that was the name of the charming beauty) was well aware of the hole and openly offered the main character mutual peeping at each other. Dazed by the onslaught of the young voyeur, who skillfully blackmailed him with two-washed pictures, Kido was forced to go along with her. From that day on, Tatsuhiko Kido begins to master all the subtleties and delights of voyeurism…