OVA
Description
Motoko Tamura is a third-year student at Rinin High School, hailing from the secluded mountain village of Hayashikoshi City within Rinin City. As Student Council President, she covertly commands the Rinkan Club—a group upholding an ancient ritual where designated "shrine maidens" endure gang rape to pacify a local deity. Her leadership stems from a personal motive: avoiding the shrine maiden fate herself, having been born from the club’s prior ceremony.

She projects an arrogant, cold-hearted, and overconfident persona, maintaining serious authority through a calm charisma that dominates both the Student Council and Rinkan Club despite her sparse friendships. This control shatters when loved ones are threatened, contrasting sharply with her enjoyment of victims' suffering—especially that of her stepsister and nemesis, Suzuko Yamazaki, whom she relentlessly targets for rituals.

Physically, Motoko possesses long blonde hair with spiky bangs, piercing blue eyes, a pale complexion, and an average-height teenage build. Her attire consistently consists of school uniforms: sailor suits, pleated skirts, crop tops, knee-high socks, shorts, and uwabaki.

Her relationships pivot on conflict and devotion. Suzuko Yamazaki, her stepsister and arch-enemy, shares origin as another child of the Rinkan Club’s ceremonies. Motoko is romantically entwined with Katsuragi Maki, her best friend and girlfriend, displaying fierce protectiveness that becomes her emotional Achilles' heel—triggering breakdowns when Maki falls prey to the club. She also crosses paths with Maki’s family: mother Aiko Katsuragi and sister Shiori Nakamura, both eventual shrine maidens.

Motoko’s downfall unfolds when she fails to shield Maki from the club. Suzuko exposes a document confirming their half-sibling tie, enabling Suzuko to designate Motoko as a shrine maiden. Stripped of her leadership, Motoko endures public shaming—including a humiliating enema incident during an assembly that causes loss of bodily control, fracturing her psyche. Suzuko condemns her to lifelong shrine maidenhood, subjecting her to perpetual gang rape by the club. Impregnated by the members, Motoko’s altered mind perceives this torment as pleasure.