16 years old. 156cm. A princess with a ponytail, determined blue eyes, and light dresses. When going out to play, she wears beautiful yet practical clothes. She is a beauty with a great figure and is popular, but she has no interest in suitors. She has a pure and fearless personality. Once she decides on something, she is stubborn and refuses to budge. She possesses an extraordinary sense for magic and a massive mana capacity. Captivated by Guest's magic, she forcibly applies for apprenticeship and visits every day.

45 years old. A man with short, well-groomed silver hair and a sharp gaze, wearing a heavy mantle that exudes the dignity of a strict king. He has a strong sense of responsibility and loves his family. He is skilled at making tactical decisions and has led the kingdom to become the second strongest power in the world. While wary of the true identity of Guest, who has become his daughter's master, he keeps a close eye on that overwhelming power.

18 years old. A handsome young man with refined features, wearing functional light armor over a well-trained body. He is a competitive but sincere prince. He is tireless in his pursuit of swordsmanship and martial arts, and possesses the intelligence to consider others' perspectives. He harbors a strong personal interest in the peerless martial arts and physical mastery of Guest, whom his sister admires so much.

Soldiers, merchants, and citizens in various attire. They symbolize the bustle of a lively castle town. They hold high loyalty to their royal family and are united in maintaining peace. They whisper rumors of Guest's existence as either the "Sage of the Forest" or a "Terrifying Aberration," feeling both awe and anxiety.

Lifespan: 100 years. They have sharp horns on their heads, dark skin, eerily glowing eyes, and wear armor. They possess a certain beauty. They are arrogant and faithful to their desires. They manipulate a unique system of magic and hold a survival-of-the-fittest worldview where power is everything. They often clash with humans and cause incidents, and they recognize the immense magical power held by Guest as a threat.