OVA
Description
Hiroko Takashiro starts her journey as a red-haired high school student drawn to the occult, founding an informal witchcraft club with classmates Rie Morita and Saki Shindou. Their curiosity intensifies upon unearthing the forbidden *Bible Black* grimoire in an antique shop, prompting reckless spellcasting. A test of a lust spell on student council member Junko Mochida triggers a public scandal during a school assembly, cementing the club’s infamy and emboldening darker experiments.
When student council president Nami Kozono rejects their bid for official recognition, the group retaliates with a love spell to warp Kozono’s desires toward socially awkward Hiratani. The plan spirals as Kozono’s obsession drives her to join the club, seeking vengeance. Ambition peaks with a demon-summoning ritual, but the entity’s violent assault leaves Hiroko comatose for three days, seeding a permanent fear of dark magic.
Traumatized, Hiroko withdraws, but Kozono seizes control, orchestrating a Walpurgis Night ritual with Reika Kitami as a sacrificial vessel. Hiroko tries to halt the ceremony but is imprisoned until escaping to find carnage—most members dead, the *Bible Black* vanished. This horror steers her toward covert studies of white magic and occult history, vowing never to repeat past mistakes.
Years later, Hiroko returns to her alma mater as an art teacher and guardian of the cursed basement where rituals once unfolded. Her fragile peace shatters when Reika Kitami, now a vengeful witch, resurfaces. Partnering with student Taki Minase, Hiroko works to dismantle Kitami’s plots, including a soul-transfer ritual targeting Kurumi Imari. Captured and brutalized by Kitami’s cult, Hiroko endures torture and exploitation yet persists, leveraging her arcane knowledge to sabotage rituals and erase memories of the chaos.
Decades onward, Hiroko adopts a reclusive life as a nun, battling Kitami’s residual influence. Discovering fragments of Kitami’s soul embedded within Imari, she dedicates herself to containment. Her resolve is tested by lingering psychological scars from the demonic assault, which surface as sporadic compulsive urges. She treads a narrow path between spiritual discipline and the ever-present lure of darkness.
Her evolving appearance—from crimson-haired student in uniform to poised educator in tailored attire, then to a nun in austere robes—mirrors her internal shifts: occult seeker, haunted survivor, and relentless sentinel against the shadows she once courted.
When student council president Nami Kozono rejects their bid for official recognition, the group retaliates with a love spell to warp Kozono’s desires toward socially awkward Hiratani. The plan spirals as Kozono’s obsession drives her to join the club, seeking vengeance. Ambition peaks with a demon-summoning ritual, but the entity’s violent assault leaves Hiroko comatose for three days, seeding a permanent fear of dark magic.
Traumatized, Hiroko withdraws, but Kozono seizes control, orchestrating a Walpurgis Night ritual with Reika Kitami as a sacrificial vessel. Hiroko tries to halt the ceremony but is imprisoned until escaping to find carnage—most members dead, the *Bible Black* vanished. This horror steers her toward covert studies of white magic and occult history, vowing never to repeat past mistakes.
Years later, Hiroko returns to her alma mater as an art teacher and guardian of the cursed basement where rituals once unfolded. Her fragile peace shatters when Reika Kitami, now a vengeful witch, resurfaces. Partnering with student Taki Minase, Hiroko works to dismantle Kitami’s plots, including a soul-transfer ritual targeting Kurumi Imari. Captured and brutalized by Kitami’s cult, Hiroko endures torture and exploitation yet persists, leveraging her arcane knowledge to sabotage rituals and erase memories of the chaos.
Decades onward, Hiroko adopts a reclusive life as a nun, battling Kitami’s residual influence. Discovering fragments of Kitami’s soul embedded within Imari, she dedicates herself to containment. Her resolve is tested by lingering psychological scars from the demonic assault, which surface as sporadic compulsive urges. She treads a narrow path between spiritual discipline and the ever-present lure of darkness.
Her evolving appearance—from crimson-haired student in uniform to poised educator in tailored attire, then to a nun in austere robes—mirrors her internal shifts: occult seeker, haunted survivor, and relentless sentinel against the shadows she once courted.