"I'm a teacher, but I get off on being treated like a slave."
He is in heat and declares that he will "lick her like a dog until she comes"!
He exposes her body and soul even though it's her first time?!

Mochizuki Fubuki, a junior high school nurse, has a problem.
Despite her mature appearance, she has never been in love before!
One day, she sees a poster for a musical hung up by Tachibana Rui, a music teacher who is very popular with his students.
She was intrigued, and to her surprise, he asked her to go to the show with him!
On the way home, Rui expresses his concern that she seemed depressed at school, and when she talks to him about how she wants to be soothed, he invites her to his home, where he has a dog.
But there was no dog in sight... and then he came out wearing a collar!