Since moving in, I've noticed a beautiful woman named Natsumi Aragaki more often. I realized her house was visible from my window, so I began watching her every day. One afternoon, I accidentally saw her with the window wide open, masturbating. After that, my desire to have some kind of relationship with her grew stronger. One night, returning from my shift, I spotted her walking with heavy luggage and quickly called out to her. That moment marked the beginning of our fateful encounter.