During summer vacation, I decided to stay at my older brother's house for a month. My older brother and his wife, Ai-san, are close friends and have known each other since we were kids. What's more, Ai-san used to date me before she got married. I was really looking forward to seeing her again. As expected, Ai-san still looked beautiful and innocent. It wasn't long before our passionate desires took over, and we started secretly touching each other whenever there was even a moment alone. The thrill of sneaking around only intensified our relationship.