Nao senpai, a senior from the year above me, welcomed me with a kind smile when I decided to join the literature club. She usually wears glasses and is a beautiful person with a neat and calm demeanor. "Can I lick your nipples?" With that one word, our relationship changed. "I'll be your first woman." From the day I lost my virginity to the day she graduated, I was her sex slave, and I was violated everywhere, all the time. This is the record of my youth.