JUY-577 Spending the night of a massive blackout alone with my crush, my sister-in-law... Ayaka Mutou.

On a scorching summer day, I was supposed to enjoy dinner at home with my wife's family. While my wife went to pick up her mother-in-law, I found myself alone with my wife's sister, Ayaka-san, whom I had long admired, and struggled to maintain my composure... As night fell, just as I was about to start preparing dinner in the kitchen, a massive power outage struck. Due to this sudden accident, I ended up spending the night alone with Ayaka-san, unable to suppress my excitement at the sight of her dripping sweat...