Summer Vacation In The Hot And Humid Countryside. I Drowned In Sweaty Sex With My Girlfriend's Defenseless Sister. Iroha Natsume

During the Obon holiday, I was going to visit my fiancée's family home. I had heard about it, but it was the countryside with no convenience stores around. The only one who came to greet me was her older sister... Saya-san. Apparently her parents had mistaken the dates and gone on a trip. I was a bit let down, but... that didn't matter anymore. Because my mind was already full of Saya-san.