OVA
Description
Jeanne d'Arc, formally designated as Jeanne d'Arc the 30th, hails from a matrilineal family marked by her mother's multiple divorces and remarriages. She shared a close bond with her older brother Pierre until family traditions resulted in his disownment; despite this, they maintained communication. At fourteen, she entered the clandestine organization IU.

Her narrative begins when IU assigns her, operating under the alias "Durandal," to target Shirayuki Hotogi with the aim of forcibly recruiting her. This operation fails due to intervention by Aria H. Kanzaki, Kinji Tohyama, and Shirayuki herself, leading to Jeanne's capture. Facing severe legal consequences, including potential life imprisonment, she accepts a plea bargain requiring her enrollment at Tokyo Butei High School as a second-year exchange student from Paris, specializing in the Informa department.

Jeanne exhibits a serious and formal demeanor, a product of her sheltered upbringing. She expresses discomfort with modern conventions like school uniforms revealing legs and struggles with everyday technology such as vending machines. In combat, she adheres strictly to traditional methods, insisting on wearing plate armor. Despite her composed exterior, close acquaintances observe a more approachable side, including maiden-like tendencies when discussing her homeland or fashion interests. She maintains strict etiquette, such as applying perfume before meetings with gentlemen, a practice instilled by her grandmother.

Her development includes forming friendships, notably with Riko Mine, who influences Jeanne's secret interest in collecting maid dresses and lolita fashion. Conversely, Jeanne teaches Riko strategic planning techniques. She also develops a rapport with Misaki Nakasorachi and gains popularity among junior female students. Her interactions with Kinji Tohyama reveal an oblivious aspect; she remains unaware of her poor drawing skills, which Kinji occasionally exploits to misdirect her.

Jeanne possesses snow-white skin, natural silver hair styled in a wavy ponytail with bangs, and blue eyes. Her petite stature is consistent whether in Butei High's uniform or battle armor.

As an ice attribute ability user, she wields cryokinetic powers to generate and manipulate ice offensively and defensively. Her primary weapon is the broadsword Durandal, through which she channels her powers to execute techniques like projecting ice shards, creating ice trails, or freezing opponents. These abilities manifest in combat scenarios beyond her academic setting.

She becomes one of the few individuals privy to Kinji Tohyama's "Hysteria Mode" secret. Later, she assumes leadership of Team Constellation, signifying her integration into Butei High's structure and ongoing role within its operations.