After School Nightmare

In a prestigious prep school, Mashiro Ichijo harbors a profound secret: his ambiguous gender identity. When informed that he must take a new class to graduate, he discovers that the only way to succeed is to find the elusive "Key." This requires a perilous journey into a nightmarish world where his classmates, transformed into formidable enemies, will stop at nothing to claim his body and soul. As Mashiro navigates this treacherous landscape, he must confront the darkest aspects of his own psyche and the true nature of his relationships with his peers.