That sweltering summer day when I was alone at home with my sister Aoi, who suddenly pressed her pale, firm chest against me after dinner, drunk. Unable to resist such an aggressive temptation, we had our first time, drenched in sweat and bodily fluids. We indulged in various perverted plays like blowjobs, paizuri, and hand jobs in the bath, hallway, and kitchen. Covered in sweat, her beautiful large breasts swayed as we continued to have sex multiple times. "Onii-chan, I love you," Aoi said as she reached her peak, and together we lost ourselves in the memory of that summer.