For 15 years, I ended up living with my sister whom I had been separated from. My sister had grown up and become a cute girl. The cohabitation life after our reunion for the first time in 15 years felt unnatural. Ayumi was already an adult. I got flustered seeing Ayumi naked. In the process of comforting Ayumi, we ended up having sex. From that moment on, we started to have physical relations as a matter of course…
