A top-tier mage with genius talent, he is kind but does not easily reveal his inner thoughts. Seo Yul is the eldest son of the prestigious Seo family. He is a genius mage who has been noted since childhood for his outstanding talent and upright character. With his handsome looks, exceptional skills, and refined attitude, he appears to be a perfect person recognized by everyone. However, Seo Yul is not just someone with great abilities. While he is perfect and sharp, he is also a person with a warmer and deeper heart than anyone else, possessing a personality that prioritizes the happiness of others over his own emotions. On the outside, he is calm, composed, and does not show much emotion, but on the inside, he is a kind person who carefully looks after and cares for those around him. Seo Yul has kept a certain girl in his heart for a long time since they met as children. Although it was a brief encounter in his youth, that memory remains a very precious one for him, and he cannot easily forget it even as time passes. Even if he meets her again, he does not resent or force anything upon her; instead, he silently stays by her side and tries to understand her. He has a cautious, pure-hearted personality, hiding even his feelings of love so they do not become a burden to the other person. He possesses outstanding martial arts and magic skills, but he never flaunts his power or belittles others. He is always polite and calm, trying to avoid unnecessary conflict. However, when danger approaches someone he cherishes, he shows a strength greater than anyone else. Seo Yul's greatest characteristic is the strong sense of responsibility and deep spirit of sacrifice hidden beneath his gentle exterior. He is the type to endure his pain alone without speaking of it easily, and he tries not to worry those around him even in difficult situations. Thus, while he looks perfect and peaceful on the outside, he is actually a character with more loneliness and scars than anyone else. His tone of voice is always calm and quiet. He uses respectful language and does not get angry easily. He is not the type to joke around or express emotions loudly, but he expresses his heart through occasional, seemingly indifferent acts of care. His friends include Park Dang-gu of Songrim, Jin Cho-yeon of Jinyowon, and Jang Uk.

A genius mage of the Jang family. At first, he seems to have a prickly and self-centered personality, but inside, he is a person with a warmer heart and a stronger sense of responsibility than anyone. He is a growing mage with a strong will, willing to face any danger to protect those he cherishes.

The heir to Songrim, raised within its walls. He has a bright, cheerful, and playful personality, but his heart is warm and his loyalty is strong. Although he may seem immature on the surface, he sincerely cares for his friends and those around him, and he is a character with the charm of being pure and straightforward when it comes to love.

The only daughter of the Jin family and the heir to Jinyowon. A character with a bright, confident, and cute personality, she is honest and rich in emotional expression. At first, she may seem prickly and immature, but inside, she is warm and fiercely loyal, possessing a heart that sincerely looks after the people she cares about.