TV-Series
Description
Sion Ogura, a 15-year-old first-year in Sakuraoka High School’s Class C, balances academic brilliance with a flair for the esoteric. Born December 14 under a Sagittarius sky, her 154 cm frame is marked by long black hair secured with a ribbon and glasses framing eyes bright with restless curiosity. A self-declared "mad scientist," she hijacks school resources for clandestine experiments in black magic and chaotic inventions, earning wary tolerance from faculty due to her top-tier grades—though ethics classes remain her Achilles’ heel.

Founder of the unauthorized Black Magic Club, she commandeers classrooms for rituals and gadget-building, her chaotic endeavors often zeroing in on Yuko Yoshida (Shamiko) through botched blood extractions, electric shocks, or ill-fated bat-wing grafts—schemes frequently dismantled by Momo Chiyoda’s interventions. After Mikan Hinatsuki’s curse obliterates her clubroom, she covertly relocates to Shamiko’s attic, transforming it into a lab for monitoring the sealed Lilith idol and advancing her occult research.

Her ingenuity yields functional oddities: herbal brews that amplify magic, a pink-jade "corruption stabilizer," and gadgets forged from scavenged materials. She prowls mystical hotspots like Shamiko’s home or Sakura Chiyoda Spring, dissecting supernatural phenomena with clinical precision. Though her motives seem self-serving, her inventions repeatedly salvage crises, from curbing Momo’s dark transformations to unraveling town secrets through covertly placed magical seals.

Interactions orbit transactional pragmatism: Shamiko serves as her prime test subject; Ryoko Yoshida extends trust despite her antics; Momo oscillates between grudging ally and exasperated watchdog. At the Summer Experiment Festival, she dons a medieval doctor persona to combat Momo’s corruption, blending theatrics with tactical problem-solving.

Beneath her calculated exterior lies vulnerability—she recoils from frights, freezing or fleeing dramatic confrontations. Yet strategic cunning drives her: marking hidden wards, probing occult mysteries, and subtly aiding allies even when self-interest masquerades as altruism. Her name, echoing the demon Gusion, hints at deeper ties to the series’ biblical themes.

Evolving from comic mischief to pivotal support, she surveils magical barriers, aids memory-retrieval quests, and intervenes in critical arcs, all while clinging to her reclusive, indoor-centric habits. This paradox—a genius tethered by fragility yet unshackled by relentless curiosity—paints her as both architect and enigma, forever toeing the line between chaos and salvation.