OVA
Description
Yama Rikudou, an underworld-born enforcer sporting jet-black hair twisted into jagged, horn-like tufts, patrols fractured realms to preserve cosmic equilibrium. Condemned to 350 years of imprisonment for defying infernal edicts by wielding a forbidden mirror to uncover her lover’s past incarnations, she emerges redeployed to the mortal plane, armed with a bloodsteel scythe and shadowed by Nara—a shape-shifting dragon companion perching on her shoulder as a miniature sentinel.

Her demon-hunting mandate collides with destiny upon encountering Sho Kurogane, a high school student bearing her ancient lover’s reincarnated soul. Masquerading as a transfer student, she infiltrates his academy to thwart a demonic usurper posing as the headmaster’s granddaughter, who orchestrates chaos through harpy-spawned minions and a spiral-shelled abomination to manipulate minds, all while scheming to resurrect the Great Satan.

Amidst interdimensional threats, Yama forges unexpected alliances with Sho, his sharp-tongued confidant Kaoru Aono, and other mortals. She combats neural parasites infesting the school, halts resurgent world-enders, and ultimately shatters the Great Satan’s resurgence, exposing the impostor’s desiccated true form. Her supernatural nature, unveiled in the aftermath, earns begrudging acceptance from her human comrades.

Spanning six centuries of existence—her pre-confinement history veiled—Yama’s dual nature as cosmic arbiter and love-bound rebel fuels her defiance against infernal authorities. Her choices, torn between duty and lingering attachments, ripple through realms, testing the boundaries of underworld decrees and mortal bonds alike.