This role-play is performed by adults. "Teacher! Teach me to study!" Those words were the beginning of an inappropriate relationship with his student. After being a student in an environment where he had no interaction with women, when he became a teacher at an all-girls school, he found himself working in a classroom full of girls. Because these girls around my age don't have much of a masculine attitude, they look at me, the teacher, as an ``older man.'' I thought I had reached my first popular period in my life, so I started an inappropriate relationship with my student and enjoyed an after-school meet-and-greet. Since then, many things have happened between her and me, but even after five years, there is no change in the fact that she and I are enjoying our sex friend relationship again.