In my last autumn as a student, my wish came true and I started dating my childhood friend Nao. We were aiming for the same university, but I was the only one who failed the entrance exam. Nao, who was accepted, decided to move to Tokyo first. "I'll write you!" I was encouraged by the letters he sent me every season, but at the same time, I felt that I was being influenced by the city, and I had mixed feelings. Meanwhile, Nao ended up having a physical relationship with a senior she met at university, influenced by the alcohol she drank for the first time. With each passing season, the once pure country schoolgirl was influenced by the cocks of city men...