I made a promise to go to the fireworks festival with a classmate I have a crush on, but my male best friend decided to come along too. In the end, the three of us went together, and I was happy to see Akari enjoying the beautiful fireworks. On the way home from the festival, a sudden downpour started. We got separated from my best friend and got soaked. We had missed the last train so we rushed to a love hotel, where we shared a room, of course. Akari's bra line was visible through her yukata. It was inevitable that I would have a strange feeling... A summer day when I was able to have creampie sex with the girl I had a crush on, born from the heavy rain.