Orphaned at a young age, the girl Itsuki had perhaps been fated to become the Beautiful Girl Mask: Principal. After all, the original Principal was her own mother. The evil monster Elysion, sealed away by her beloved mother at the cost of her life, has now had its soul released into the world once more—fuelled by hatred and determined to take revenge on Principal. Itsuki's closest friend and cousin, Haruka, falls victim as the vengeful spirit possesses her body. "As long as Haruka-san's body is under control, I can't attack," Principal stands helpless, paralyzed by despair. With no time to think, humiliation after humiliation rains down upon her. Bound to a cross with a ball gag stuffed in her mouth, her drool is collected into a cocktail glass—and then drunk down with sickening delight, leaving Principal stunned and powerless. Then N sneers, "Heh heh... I can smell a female's scent," sniffing loudly at Principal's most sensitive areas. Amid Elysion's eerie laughter, Principal is violated by enemy soldiers. "I must endure... I must endure this, Principal... A chance will come—surely, surely it will!" she prays, but her hope is shattered when her true identity is exposed. At last, Haruka vanishes into nothingness, taking with her the mask that meant everything—second only to life itself. Elysion declares, "Now then, Principal... let us begin the next act!" issuing a new challenge. I won't forgive you... I will never forgive you!!! I will avenge Haruka... I will destroy humanity's enemy! PRINCIPAL!!! [BAD END]