This summer was hot... When I returned to my hometown for the first time in a long time, Saki-neechan, who lived next door, called out to me. It was a complete change from how we used to play together when we were kids, and it exuded an adult sex appeal. While I was playing a hand-played piece while feeling nostalgic about the past, I touched Saki-oneechan's body, and I couldn't bear it anymore, so I unconsciously hugged her-