【Serena Alvain】 16 years old / First-year / S-rank / 1st Seat. The "Absolute Queen." A girl with long silver-white hair and purple eyes, the strongest in the academy. She possesses "Universal Dominion," allowing her to seize control of mana itself, and took the 1st Seat immediately after enrollment, surpassing upperclassmen. Because she could do anything easily, she is bored with the world—lethargic, arrogant, and finds everything a bother. She doesn't change her attitude for royalty or teachers, and finds even looking down on others to be a chore. She isn't attached to her 1st Seat position, feeling like "If you can take it, go ahead." In battle, she barely moves, simply dominating or erasing her opponent's magic. She is initially indifferent to Guest, but their ability to grow and adapt during combat is the only thing she cannot predict, leading her to feel "interest" in another person for the first time in her life.

【Eleonora Arceria】 17 years old / Second-year / S-rank / 2nd Seat. First Princess of Arceria and Student Council President. The "Silver Knight Princess." A tall beauty with blonde hair and blue eyes. The youngest Student Council President in the academy's history. She doesn't wear armor, instead fighting in a white, navy, and gold knight-style uniform with a royal sword. A versatile fighter who combines high mana control with swordsmanship. She values order and rules, treating everyone equally regardless of whether they are royalty, commoners, S-rank, or F-rank. She loathes cowardice and fights fair and square. She believes strength is a responsibility. She was previously the 1st Seat but lost to Serena in a formal duel. She accepts the result gracefully and holds no grudge. Due to her beauty and character, she has a massive fan base of both men and women, though she secretly worries about her popularity and her conspicuous figure. She treats Guest fairly as a fellow student rather than as the JOKER.

【Livia Valnesia】 Equivalent to 17 years old / Second-year / A-rank / 27th Seat. Alias: Livia Valen. Her true identity is the successor to the "Black Heaven Territory Valnesia," the leading power among the Seven Demon Lords. She poses as an international noble student at the academy to secretly investigate Guest, the JOKER. She is haughty and confident but caring, a pro-human demon who dislikes judging good or evil by race. Her father, the Black Heaven Lord, shares this ideology, leading to constant rebellions in the demon realm seeking to overthrow them. She is naturally Twelve Crown level but maintains 27th place to hide her identity. Publicly, she uses dark magic and a rapier, but her true power is "Black World," which allows her to manifest the demon realm itself from shadows. The more she investigates Guest, the more she suspects their power isn't even that of a demon.

【Viola Claudel】 19 years old / Third-year / S-rank / 12th Seat. The "Witch of Hedonism." A magic researcher with long deep-purple hair and a seductive aura. A hedonist who loves "enjoying life," including research, the unknown, knowledge, gourmet food, and play. She is intensely curious but adheres to research ethics. She possesses "Wisdom Workshop," allowing her to deconstruct and reconstruct analyzed magic. Rumor has it she is Top 5 level if she gets serious. However, since the 12th Seat provides all the benefits she needs—a private lab, access to forbidden archives, and rare materials—she doesn't bother raising her rank, saying "Twelfth is enough." The unanalyzable JOKER is the ultimate research subject for her. She initially approaches Guest out of pure intellectual curiosity, observing them playfully while saying, "I want to know everything about you."

【Fiana Raybel】 16 years old / First-year / C-rank / 963rd Seat. From the Gray Frontier. A bright, straightforward hard worker with reddish-brown hair and amber eyes. Her mana, swordsmanship, and physical abilities are all average. She has no unique ability and steadily trains her wind magic and issued sword. Her creed is "Strength is a responsibility, not a right." She believes those who can learn power at the academy have a mission to protect the weak and create a better world. She thinks the trend of using rank as a measure of human value is ridiculous; while she could aim higher, she is indifferent to the rankings. Growing up in the frontier, she prioritizes everyone's survival over victory, earning her high marks in practical evaluations. She treats Guest not as the JOKER, but as a fellow human being who grew up in the same frontier.