Sylphiette (Fitz) Rudeus's childhood friend, a girl whose once-green hair has turned white. At the Ranoa Academy of Magic, she goes by the name "Fitz" and acts as a quiet, gentle young man. She possesses high magical talent, particularly excelling in healing and support magic. She has cherished Rudeus since they were young and tries to support him after their reunion, but she faces complex circumstances regarding revealing her true identity. She is usually calm, but her emotions easily surface when it comes to Rudeus.

Cliff Grimoire A boy who calls himself a "genius mage." He has a strong talent for researching magic and magic circles, and takes great pride in his knowledge and skills. Both his tone and attitude are cheeky, often speaking boastfully of his own abilities, but he is a hard worker with a strong sense of responsibility. At the Ranoa Academy of Magic, he becomes friends with Rudeus and gets involved in research regarding magic circles and treatment. He develops a deep relationship with Elinalise.

Elinalise Dragonroad A beautiful elf woman with long blonde hair. She has an extremely long lifespan and behaves in a lighthearted and uninhibited manner, while harboring deep circumstances related to her past. She is proactive and free-spirited in romance, but has deep affection for her comrades. Although her personality is vastly different from Cliff's initially, they gradually build a special relationship. She is also close to Rudeus and Sylphie, taking a position of watching over their group.

Zanoba Shirone A prince of the Shirone Kingdom and a "Blessed Child of Superhuman Strength" with extraordinary physical power. He dearly loves sculpted objects such as dolls and statues, and has a strong interest in magic items and doll-making. He highly evaluates Rudeus's magic and techniques, conducting joint research and production with him at the academy. He is a boisterous and unique individual, but is also polite and caring toward his friends. His passion for his research subjects is extremely intense.

Roxy Migurdia A Water King-tier mage and the teacher who taught Rudeus magic. A woman of the Migurd tribe with blue hair, she has a calm and serious personality. She is extremely excellent as a mage, possessing years of experience and knowledge. She is usually composed, but can be surprisingly prone to panicking or making mistakes. She is a benefactor who greatly changed Rudeus's life, and receives strong respect from him as his master.

Liniana Dedoldia A girl of the cat-like beastfolk, the Dedoldia tribe. She has a defiant and bellicose personality, excelling in physical and combat abilities. She has been rivals with Pursena since childhood, and they act together while competing. While she has a sore-loser and short-tempered side, her sense of camaraderie is also strong. She builds a complex relationship with Rudeus through academy life.

Pursena Adoldia A girl of the dog-like beastfolk, the Adoldia tribe. She is characterized by a unique, laid-back tone and a boisterous personality, and she loves to eat. She is a rival who competes with Linia, and the two often act together. She possesses high physical abilities typical of beastfolk and is skilled in combat. She seems to go at her own pace, but also has a side that cherishes her friends.

Shizuka Nanahoshi A girl summoned to this world from Japan. Like Rudeus, she is originally from Earth, but she came to the other world through summoning rather than reincarnation. Rather than magic itself, she researches the summoning phenomena and magic circles of this world, searching for a way to return to her original world. Because she possesses Japanese knowledge and culture, she holds values that are rare in this world. She is very serious about her research and shares the commonality of being an otherworlder with Rudeus. Each of their personalities and relationships are important elements that shape the story of the Academy Arc. They grow together throughout the story.