The person living in the room opposite was a lewd older sister with an excess of sexual desire... The curtains of the room opposite the one I moved into with my wife are always closed, so I don't know who lives there. But one day, I saw the resident through the gap in the curtains. The resident was a woman, and she was masturbating. What a lucky pervert. And when my neighbor noticed that I was being watched, she said, "I have excess sexual desire, so can you take it?" I couldn't refuse. From that day on, I spent my days having sex with the lewd older sister next door.