OVA
Description
Shizuri Castiella Kasugaya has fair skin, long white hair, and blue eyes. Two white horns, usually hidden beneath her wimple, function as sensory organs for detecting auras and demonic energy; physical contact with them triggers sexual stimulation. She typically wears the College of Magical Arts uniform: a white shirt, black tie, and purple skirt.
Brave and a natural leader, she enjoys tea and coffee, particularly when served by Kojou Akatsuki on Onrai Island. Her romantic inexperience matches "the level of an elementary schooler."
Originally aligned with the heretical Gisella faction of the Lothringian Orthodox Church, she adopted the surname "Kasugaya" from Shinako Kasugaya, the first wielder of her sword, Hauras. Trained as an attack mage, she lacked an official license due to age restrictions in attack mage labor laws during the light novel’s events.
She first encountered Kojou Akatsuki unconscious on Onrai Island’s beach, where he suffered amnesia recalling only his name. Identifying him as the Fourth Primogenitor, she declared herself his "watcher" while pointing Hauras at his neck. During a training mission against armored Shikigami, she assigned Kojou to support duty for his inability to access his powers. When Kojou sustained severe injuries attempting to summon a Beast Vassal, she reacted with visible anger, later blaming herself while keeping vigil at his hospital bedside. An accidental exposure incident there led her to punch him.
She joined the "Demon Sanctuary Research Club" ("Dem-Club") at Kojou’s invitation, though tensions arose with Yukina Himeragi during their initial club meeting. Her collaboration with Kiriha, Priestess of the Six Blades, began when both sensed each other’s non-human nature during a hospital visit. Kiriha recruited her to slay a demon beast, with Shizuri wielding Hauras for the mission. During this collaboration, Shizuri remarked on understanding why Kojou and Yukina conflicted with Kiriha, unintentionally hurting Kiriha’s feelings. The demon beast fell to their combined efforts.
Her abilities include dual-wielding expertise, Shikigami manipulation, and enhanced strength, durability, speed, and agility. She activates Hauras with the chant: "This fang is the light rending our darkness..." She taught Kojou Akatsuki English, enabling him to pass exams despite cheating suspicions.
She becomes Kojou’s first permanent blood companion. Future timelines confirm her marriage to Kojou alongside other female characters. A practical quirk involves her difficulty operating newer vending machines without assistance.
Brave and a natural leader, she enjoys tea and coffee, particularly when served by Kojou Akatsuki on Onrai Island. Her romantic inexperience matches "the level of an elementary schooler."
Originally aligned with the heretical Gisella faction of the Lothringian Orthodox Church, she adopted the surname "Kasugaya" from Shinako Kasugaya, the first wielder of her sword, Hauras. Trained as an attack mage, she lacked an official license due to age restrictions in attack mage labor laws during the light novel’s events.
She first encountered Kojou Akatsuki unconscious on Onrai Island’s beach, where he suffered amnesia recalling only his name. Identifying him as the Fourth Primogenitor, she declared herself his "watcher" while pointing Hauras at his neck. During a training mission against armored Shikigami, she assigned Kojou to support duty for his inability to access his powers. When Kojou sustained severe injuries attempting to summon a Beast Vassal, she reacted with visible anger, later blaming herself while keeping vigil at his hospital bedside. An accidental exposure incident there led her to punch him.
She joined the "Demon Sanctuary Research Club" ("Dem-Club") at Kojou’s invitation, though tensions arose with Yukina Himeragi during their initial club meeting. Her collaboration with Kiriha, Priestess of the Six Blades, began when both sensed each other’s non-human nature during a hospital visit. Kiriha recruited her to slay a demon beast, with Shizuri wielding Hauras for the mission. During this collaboration, Shizuri remarked on understanding why Kojou and Yukina conflicted with Kiriha, unintentionally hurting Kiriha’s feelings. The demon beast fell to their combined efforts.
Her abilities include dual-wielding expertise, Shikigami manipulation, and enhanced strength, durability, speed, and agility. She activates Hauras with the chant: "This fang is the light rending our darkness..." She taught Kojou Akatsuki English, enabling him to pass exams despite cheating suspicions.
She becomes Kojou’s first permanent blood companion. Future timelines confirm her marriage to Kojou alongside other female characters. A practical quirk involves her difficulty operating newer vending machines without assistance.