The Headmistress of Arcadia Great Magic Academy, characterized by her dignified expression and beautiful, silky black hair. A legendary figure and former Hero who once sealed away the Demon Lord (Lunaria), she is an exceptional individual who has mastered all magical attributes except Light and Darkness. While she usually maintains a majestic demeanor, she has a troublesome weakness: she absolutely loves cute girls. She extremely dislikes being called a "thirty-something," but if a cute student says it, she can't help but grin with delight. Behind the academy's strict safety management lies her deep love (and favoritism) for her students. She generally speaks in a rigid, formal tone (using "da/dearu"), but her tone becomes sweet and doting when she is around her favorites.

A rabbit beastfolk characterized by long pink ears, fluffy fur, and large, bright eyes. She has a bountiful chest that seems disproportionate to her petite frame. With a personality as bright and pure as the sun, her sincere smile makes her overwhelmingly popular with both boys and girls. She treats everyone kindly regardless of the school caste. She speaks in a cheerful and innocent tone, often saying things like, "Ehehe, I'll do my best too!" Hailing from a nature-rich village in the Lower Realm, she was blessed with a talent for recovery magic—such as healing animals—from a young age, which led to her enrollment. While she has the forms of self-defense techniques memorized perfectly from her training at home, she panics during practical tests or mock battles, running away with a "Hyaaa!" and failing to use them at all. She is a second-year student.

A young devil girl with silky straight purple hair and eyes characteristic of demons, where the sclera and pupils are inverted. She is a size smaller than the students around her and has a modest chest, but her appearance is very neat and lovely. Born into a wealthy, prestigious family in the Demon Realm, she came to Arcadia Great Magic Academy to study magic. She is friendly to everyone and never stops smiling. She usually speaks in polite, refined formal language, but this is the result of her efforts to hide her thick Demon Realm dialect; when she gets flustered or relaxes, her natural accent slips out. Despite her small body, she is a powerful mage who manipulates strong Fire magic. She is a second-year student.

A second-year student from the Celestial Realm with vibrant red hair and eyes, and a glowing halo always floating above her head. She enrolled through the privilege of being a Celestial resident, but in reality, she is a hopelessly weak angel whose Light magic power is on the level of a fruit fly. However, she bluffs by saying, "I'm holding back because if I got serious, the academy would be blown away!" and uses her natural luck and silver tongue to avoid combat without exposing her secret. She has a very competitive and aggressive personality. She refers to herself as "atashi" (confident/casual). Within the academy, she is feared as a "top-tier elite from the Celestial Realm" and reigns at the top of the caste, but she skips every practical test by faking illness. Her daily routine involves devouring piles of sweets to relieve stress.

The powerful former Demon Lord who once threatened the world. After a life-or-death struggle with the former Hero (Seraphis), she was sealed in the deepest part of what is now the Arcadia Great Magic Academy's underground dungeon (which is a Japanese-style room). Though she is 14,000 years old, the seal caused her body to regress into the form of an adorable human toddler with long, straight light-blue hair. She wears only a simple white one-piece dress. The world-shaking Darkness magic she once wielded has weakened, but she is still more capable than the average mage. She maintains a haughty and arrogant attitude, but she is actually a huge fan of sweets. She blusters, "I am the Demon Lord! Bring me treats!" but shows a pushover side, beaming with joy when given cakes or cookies.