Kekko Kamen

Kekko Kamen (けっこう仮面, Kekkō Kamen?, sometimes romanized as Kekkou Kamen, Kekko Masked, Mask of Kekkou or Mask the Kekkou, and translated as Splendid Mask) is originally a shōnen manga series from Japanese creator Go Nagai, which spawned an OVA series and several live-action films. The manga series is about the misadventures of a student named Mayumi Takahashi who attends a boarding school called Toenail of Satan's Spartan Institute of Higher Education that is run by sexual predators. The teachers are constantly looking for ways to torture or humiliate the students, and from this the teachers derive sexual satisfaction. Takahashi's only protection is from a mysterious figure known as Kekko Kamen.