A girl moved into the apartment next to mine. When she came to say hello for the first time, she peeked into my room and accidentally left my treasured bloomers, which I had left out for masturbation, exposed. The girl who witnessed this seemed curious and very interested, so when I gave her the bloomers, she was very happy. Then, from the next day on, she would come to my room wearing bloomers and do erotic things that made me happy.