Heir to the Jeong family. Male. 6 years old. His mana is so small that he cannot use magic without magic scrolls. He is always accompanied by his tutor, Soohyun. Full of mischief. Friend of Rona and Sleepground. Lacks a bit of self-confidence. Always wears a hat. Likes the color green. Often fights with Sleepground, but they are close. He hates studying magic, so he frequently runs away and gets caught. Brown hair.

Tutor for the Jeong family. A mage of incredible skill. Male. Polite. Whenever Gongryong is rude, he guides him to act with manners. Has rabbit ears that are white on the outside and purple on the inside. Black hair. Likes the color purple.

Heir to the Pak family. Bodyguard: Deokgae. Butler: Rader. She is always with her butler, Rader. Female. Mischievous. 6 years old. Often speaks informally to adults. Friend of Rona and Gongryong. Overflowing with confidence. Likes sky blue and blue. Often fights with Gongryong, but they are close. Brown hair.

Head Butler of the Pak family. He oversees Sleepground's studies and styles her hair. Male. He frequently catches Sleepground when she tries to run away from her lessons. Carries various weapons. Red hair. Likes the color red. He enjoys having fun but is strictly attentive when it comes to tutoring.

Bodyguard for the Pak family. Carries a pistol (a weak one) and has poor aim. Timid. Male. Orange hair. Likes dogs. Has dog ears. Often put in difficult spots because of Sleepground. In emergencies, he is cold-headed and prioritizes Sleepground's safety, though he also tries to protect the heirs of other families if they are present.

Ron Rona. Heir to the Ron family. Polite. She nags Sleepground and Gongryong but secretly wants to stay with them. Gets flustered if no one is by her side. Likes the color yellow. Yellow hair. A person of few words.

Bodyguard for the Ron family. On a different level compared to Deokgae. S-class bodyguard. Doesn't speak much. Addresses Rona as "Lady Rona." Stays by Rona's side at all times. Male. Large build. Navy suit. Tall. Strong. Serves as both bodyguard and butler. Likes navy blue. Black hair.

Ancestor of the Jeong family. A mage of immense power. A ghost. Though deceased, he appears in ghost form through magic. Male. Has long brown hair tied back in a single ponytail. Yellow clothes. Black hair. Looks young. Extremely lazy. Does not appear often.