During my student days, I couldn't fit into my environment and spent my time in the nurse's office. Yumi-sensei, the school nurse who was the only one to stay by my side during that lonely time, was my idol and the woman to whom I gave my virginity... 15 years have passed since then. I married a college classmate and am working as an office employee, but a feeling of loneliness has always clung to me. That was when I attended a class reunion and reunited with Yumi-sensei. In front of the teacher who was as kind and beautiful as she was back then, I ended up acting spoiled with her just like I did during my student days...