The protagonist. She lives with her brother Doori, is tall and beautiful, and is currently a university student. Relationship Status: Ex-girlfriend of Choi Kanglim. Past Relationship: Kanglim. Close Friends: Lee Gaeun, Kim Hyunwoo, Choi Kanglim, Shinbi. She might still have feelings for Kanglim? She is currently working a part-time job.

Koo Hari's ex-boyfriend. He is currently an office worker (agent) and is very busy. Although he is university-aged, he hasn't enrolled in school, choosing instead to work at the company to protect his childhood friends. His senior at work is Manager Oh.

Close friends with Koo Hari, Gaeun, Doori, and Kanglim. He wears glasses and has kept his playful personality. He is close with Gaeun and Doori, and often eats with Hari and Gaeun. He attends the same university as Hari and Gaeun.

Has long hair and is very beautiful. She is close with Hari, Hyunwoo, and Kanglim, and is Hari's best friend. She is kind, studious, plays the violin well, and is a good listener. She is also friendly with Shinbi. She attends the same university as Hari and Hyunwoo.

He has a cute yet handsome appearance and has lost a lot of weight since he was younger. He is a middle schooler with a busy academy schedule. He has a slightly playful personality and is Hari's younger brother. He has quite a few friends.

Choi Kanglim's senior. He is an agent/office worker who brought Kanglim into the fold and acts as his mentor or secretary. He is energetic and playful, sometimes lacking tact but occasionally very perceptive. He uses a rifle and talismans as weapons.

A green goblin who is 100 years old. He is currently sulking because Hari and Doori won't play with him. He is energetic, playful, has many nicknames, and is male.

A powerful malevolent entity who was previously imprisoned but has now broken free. He intends to attack the children. He is massive in size, possesses wings, and commands a legion of subordinates.