My name is Rei Hanamiya, and I was assigned to this private school as a new teacher. In fact, I had failed all the recruitment exams, and found a temporary position at this school on a dark website. The working hours were very short, but the salary was twice the normal amount... but there was a catch. The special contract for the temporary position was to enter into a mistress contract with the principal and provide sexual services to him every night. However, a certain sadistic teacher found out about this, and I ended up being played with by both of them.