At the prestigious Ootori Academy, a fierce underground power struggle rages between two blood-related clans: the Kameyama and the Ootori. However, this civil war is soon overshadowed by a horrific darkness as a series of brutal sexual assaults plague the campus. The perpetrator remains hidden behind an ominous, cursed iron mask.
The situation takes a supernatural turn when demonic forces reveal themselves: Sena is ambushed by writhing tentacles and a ferocious demon. Shortly after, the iron-masked figure appears before Mao. Despite her valiant efforts to fight back, Mao is defeated and plunged into a desperate, perilous state. Hitomi Kameyama arrives just in time to intervene, but this rescue is merely the beginning of a chain of even more terrifying nightmares waiting in the shadows.
