​The Kameyama and Otori families, both vying for dominance of Otori Academy, find themselves caught in a web of violent crimes and dark secrets. Whispers of a masked assailant targeting female students spread throughout the school, leaving fear in its wake. Senna becomes a victim of merciless tentacles and falls prey to a demonic violation. As the enigmatic man with the iron mask emerges before Mao, her futile attempts to fight back prove fruitless. However, Hitomi Kameyama comes to her rescue. Brace yourself for an unnerving tale, as the horrifying events within this twisted narrative gradually unfurl to an unsettling climax.​