Kanon Kanase is the adoptive daughter of Kensei Kanase and the half-sister of Polifonia Rihavein, making her the aunt of La Folia Rihavein. She grew up in Adelard's monastery until an attack by Kou Amatsuka left her the sole survivor, after which Kensei Kanase adopted her. She attends Saikai Academy as a middle school student, becoming classmates and close friends with Yukina Himeragi and Nagisa Akatsuki.
Her appearance features shoulder-length white hair braided with a violet ribbon on the left side, bangs covering her eyebrows, and clear blue eyes, bearing a resemblance to La Folia Rihavein. She wears the standard Saikai Academy uniform with violet undergarments, standing 158 cm tall, weighing 42 kg, with measurements of bust 79 cm, waist 56 cm, and hip 80 cm.
Personality-wise, she exhibits a gentle and kind nature, often caring for stray cats, which earned her the nickname "middle-school saint" at Saikai Academy. She develops a fondness for Kojou Akatsuki, whom she refers to as "Onii-san," recognizing his protective efforts.
Her background reveals she is the illegitimate daughter of La Folia Rihavein's grandfather, granting her royal lineage from Aldegyr without claim to the throne. After the Angel Faux incident, Natsuki Minamiya becomes her legal guardian and mentor alongside Astarte. The Aldegyr royal family monitors her safety through escorts and surveillance satellites due to her familial connections.
Her abilities stem from Kensei Kanase implanting Angel Circuits, transforming her into an Artificial Angel with powers rivaling a Primogenitor. These manifest in three sealed forms:
* **Angel Faux: First Form:** Grants enhanced speed, strength, durability, senses, and flight via white feathered wings usable for defense.
* **Angel Faux: Second Form:** Adds two extra sets of wings with red eyes firing energy beams capable of harming Primogenitors. This form grants non-corporeal physiology, making her immune to physical and magical attacks by existing in another dimension, and allows creation of blizzards powerful enough to freeze entire islands.
* **Angel Faux: Third Form:** Triggers a berserk state with unknown abilities; her powers are sealed by Yukina Himeragi before this form's capabilities are known.
Her development includes involvement in the Amphisbaena arc, where Kojou assists her in finding homes for stray cats. During this arc, her transformation into an Angel Faux becomes a central conflict, leading to her powers being sealed after a confrontation. Post-incident, she remains under Natsuki's guardianship and continues her daily life at Saikai Academy, maintaining her friendships and care for animals, with ongoing protection from Aldegyr due to her royal connections.
Her relationships feature a close bond with Nagisa Akatsuki and Yukina Himeragi. Her interactions with Kojou Akatsuki are marked by trust and familial affection, while her ties to the Aldegyr monarchy, particularly La Folia, underscore her backstory despite her lack of political status.