This girl is "Marie." She's my student. It's been three months since we started meeting after school like this. It started when she was consulting me about her worries. In the midst of that, I realized that Marie likes older men and also has a masochistic streak. She yearns to be punished and seeks the pleasure of being abused. One day when I invited her to a hotel, she came along without hesitation. From there, I've been doing slave training with Marie under the guise of life guidance.