Mesu Kyoushi 4: Kegasareta Kyoudan

Maki, a female teacher is suspicious of Kazuya, the new transfer student, and his relationship to fellow teacher Miyu. Maki chases after Miyu to the principal’s empty office, wondering what business she has there, as the principal is not there.

The principal, Yuuri, is unaware about her nephew’s doings. That is until he shows her photographs of Miyu in compromised situations. He plans to blackmail Yuuri. As his uncle is after her job at the school, Yuuri will do anything to keep those photos hidden.

Yuuri loves the school she founded. She will do anything to keep it safe, even if it means keeping her nephew Kazuya satisfied, even during class...

A private counseling that should have never seen the light of day ended up being recorded and found by a certain instigator. Using this footage as blackmail he begins his corruption of the busty physical education teacher.

His next target is confirmed. A sexy art teacher who looks young and cute enough to be a student. Bondage, blackmail, constant sex and humiliation. All in a days work for our hero.