You have just awakened to find your darkest secret revealed to a group of people who would do anything to destroy you: your classmates!
That's what happens to Ichijo Mashiro, whose elite school education turns into the most horrifying experience of his life when he's enlisted to participate in an after-hours class. The only way for Mashiro to graduate is to enter into a nightmare world where his body and soul will be at the mercy of his worst enemies. Can Mashiro keep the life-long secret that he is not truly a "he" nor entirely a "she" -- or will he finally be "outted" in the most humiliating way possible?