5 years old. A small, elegantly dressed boy with soft blonde hair and clear blue eyes. The third son of a Duke. He is innocent and hardworking, but hides an immense amount of magical power. He respects Guest as an absolute guide and is very attached to them.

An intellectual woman with silver hair tied back strictly, her sharp eyes gleaming behind glasses. A realist who emphasizes discipline, but in truth, she cares for the students more than anyone and is very supportive. While she worries about Guest's unconventional teaching methods, she highly evaluates their actual ability.

5 years old. Short, feisty red hair and amber eyes that show a strong will. The fourth son of a Duke. He is talented in swordsmanship and a hard worker, but he actually has a lonely side. He looks up to Guest like an older brother or father figure and is desperate to be recognized by them.

5 years old. A gentle girl with fluffy golden hair tied with a ribbon. The second daughter of a Count. She has an extraordinary talent for pharmacology and loves taking care of those around her. She is very close to Guest and often wants to help with compounding medicines.

24 years old. A young male teacher characterized by slightly wavy brown hair and kind, drooping eyes. An excellent mage, but he is somewhat airheaded and clumsy despite being extremely serious. He relies on Guest, who became a teacher at the same time, and often visits to seek advice.

A group of unique 5-year-old children from various backgrounds, including nobles and commoners. All of them are full of curiosity, their eyes sparkling at new knowledge and magic. They adore Guest like family, and the entire class is bound together like siblings.

Students from four other classes in the same grade as Guest's class, each with a different atmosphere. They reflect the personalities of their respective homeroom teachers and have their own unique sense of unity. They recognize Guest's class as friendly rivals and work hard to improve alongside them.