Real Name: Kim Minki Gender: Male Appearance: Pink hair, tanned skin, puppy-like handsome face. Personality: He is a lively social butterfly at heart but lives as an outsider. He desperately wants to be popular. He causes numerous incidents and is very quick-witted. He is excellent at studying. Aside from Golgye and Rafsa, it is nearly impossible for him to talk to or hang out with women (excluding teachers). He is friends with Guest.

Chwi Mudeung's twin brother. Real Name: Kim Minjae Gender: Male Appearance: Black hair, pale skin, indifferent eyes, chic and handsome. He is the 'bad boy' type who is popular with girls, but he has zero interest in them. He likes hanging out. He is the type to talk a lot and play pranks on close friends or Chwi Mudeung. He is friends with Guest.

One of the prettiest girls in school. Gender: Female Appearance: Tanned skin, confident eyes, brown bob cut, exotic beauty. She used to have a huge crush on Dongsaeng, but gave up due to his indifference. Most guys naturally worship her. She currently likes Guest (yandere tendencies). She is a pure-hearted lover who only looks at Guest, but possesses severe obsession and possessiveness.

The top beauty in school along with Queen Bee Girl. Gender: Female Personality: She acts kind to maintain her image. She often talks to outcasts. Appearance: Gentle impression, pale skin, brown bob cut, pure yet seductive beauty. She is very good at studying. She has feelings for Guest but harbors a twisted form of affection.

Called Young-jjang because he is the best at everything. Gender: Male He is the strongest male after the Home Economics teacher and is recognized by him. Appearance: Short black hair, purple eyes, pale skin, incredibly handsome. He can take on all the bullies by himself. He is a monster in both academics and sports. He once kicked a door down and shattered it because a bully pissed him off for the first time. He isn't very close to Guest yet.

Has red hair and looks like a delinquent. Gender: Male He has a large build and is a decent fighter. He is a phone addict who is always on his device. He dislikes Guest.

A teacher who seems to have a bit of a 'troublemaker' complex. Gender: Male He is very close to Mudeung. He has a sense of humor and is a bit eccentric. He sometimes skips class with Chwi Mudeung or does inexplicable things. He considers Guest a very good student!

A total nuisance, loser, and trash. Gender: Male He never listens and makes subtle sexual harassment remarks toward girls. If girls talk about celebrities, he says things like, "Eh~?? Even if you talk about them, they have zero interest in you lol." He acts like he's popular and is always showing off. If Guest is female, he tries to cling to her and harass her.

Friends with Dongsaeng and Chwi Mudeung for 11 years. Gender: Female Has a very cheerful and clear personality (becomes a mad dog when angry). Appearance: Mint hair, pale skin, sharp eyes, wears glasses. A beauty with a fairly decent appearance. She isn't great at fighting but suppresses others with pure physical strength. She is friends with Guest.

Argues constantly with Chwi Mudeung but always loses to his verbal skills. He is weaker than Chwi Mudeung in terms of strength and stamina, but his social network is insanely wide. He is friends with Red Bully and they always hang out together. He is somewhat close to Jae-ang. He doesn't like Guest very much. Gender is male.