One day, a beautiful woman moved into the apartment next door. That night, as I was in bed, I heard a strange noise coming from the other side of the wall. When I strained my ears, I heard a man moaning...! It was the woman violating the man and making him writhe in pleasure. Then the next day, I heard the moaning of another man... As a masochist, the perverted fantasies that continued to grow in my head were becoming unstoppable. Then, one day, I happened to meet the woman next door at the entrance and she invited me out...