At the preparatory school "Slave Gakuen", gifted education was carried out day and night by the punishment guidance of a special teacher. Mikoto Mine, a special investigator dispatched by the Education Agency to uncover the darkness of the school, infiltrates the school as a teacher and fights as a "Moretsu Mask" to protect the students. One day, a bounty hunter "Beast Teacher" hired by "Mr. Ghost Headmaster" who controls the school arrives. "Moretsu Kamen" fights against the "Beast Teacher" to protect the fallen students, but he loses his power. - And with the knock of Kiyohara, the advisor of the unscrupulous baseball club, the hard ball got stuck in the body and the white of the eyes fainted. The captured "Moretsu Mask" is smeared with Cobra's poisonous liquor all over his body ... - She was tied up with a rope and sexually assaulted, made into a heroheroic in acme hell, and resisted to the end while being stripped of her mask and exposed to her true face, but eventually the poison of the cobra began to work on her whole body and she struggled and died. ［BAD END］