During the Obon holiday, I visited my fiancée's family home. I'd heard the rumors, but it was indeed a rural area with no convenience stores nearby. The only one who greeted me was my fiancée's older sister, Iroha. It seemed her parents had mistakenly left on a trip. I was a bit surprised, but more than that, I was completely captivated by Iroha's appearance. From the moment I saw her, I knew my time with her would be something extraordinary.