Woo Ju-in

Woo Ju-in is one of the Four Heavenly Kings of Ji Jon Middle School. He is the cute guy archetype.

Appearance
Ju-in has honey-brown colored hair and golden brown eyes. He is always smiling and happy, but when he gets serious, his face turns quiet and scary.

He is usually wearing a hoodie of some sort. He prefers warm, comfortable clothes. Though from time to time he would dress up cutely.

Personality
Woo Ju-in is said to have an amazing personality by everyone. For the most part, he is an overly friendly and happy person, always ready to lend a hand. Dani calls him a "fairy". He looks cute and innocent and often uses this to manipulate people.Ruda called him a two faced psycho kid because he said he said he doesn't mind hurting people(except Dani because he actually care about her) But his true personality traits are that he is incredibly smart (with an IQ of 200), and very perceptive. Ju-in also has an eidetic memory and never forgets something if he heard it once.

He is loyal and caring of his friends. He is willing to use his brain to hurt those who hurt his friends.

Eun Ji-ho
He is childhood friends with Eun Ji-ho, having grown up together. He has a typical close friendship with Ji-ho. They play videogames together and go to school together.

Ham Dan-i
Ju-in knew Dan-i was from another world the first time he saw her. He tells her that she "looked like she fell from the sky". At the beginning, when Dani was trying to avoid Yeoryeong, he also noticed that she was doing it because she was afraid, not out of malicious intent like Ji-ho assumes. He tries hard to become Dani's friend in the first month of middle school, often smiling at her and going up to talk to her. Over time, they become close and Ju-in nicknames her "Eomma" (Mom). Ju-in's contact is saved as "My Child" on Dani's phone. He can be protective over Dani at times. After Dani's first disappearance, Ju-in becomes determined to never forget her.