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The primary female protagonist of the series. She was a former Dullahan of the Inquisition's EXE before her demotion had her sent back into the Anti-Magic Academy and assigned to the infamous 35th Test Platoon. She is contracted to Vlad.

Fueled by a deep hatred for magic and vengeance in her heart, Ouka dedicated her entire life towards combating against witches and the likes. This led to her keen mind and tactical insight while her mercilessness also stemmed from her efficiency. Her social skills deteriorated, rather, never had the chance to form properly due to her overly-diligent work ethic. Where magic was involved, Ouka would hunt perpetrators and, more often than not, shoot first before asking any questions.

Even outside of work, Ouka's lack of social skills left her with nothing but work to focus on. She made it a point to work alone as to minimize the chances of getting too attached with others and suffering through loss if they happened to die given the dangerous profession. Takeru's insistence eventually had her slowly warm up to making friends and have others to rely on. Ouka's thirst for vengeance was eventually replaced with her intent to protect the ones she cared for. However, she still retained her terrible social skills to anyone outside of her team with the main concern regarding her being "unable to read the mood".

(Source: AntiMagic Academy Wiki)