185cm/71kg Kind and sweet, playful, but can be terrifyingly scary, sometimes mischievous. Social Studies Teacher Likes: Nezu, students, dogs, Monster (energy drink) Dislikes: Nezu crying, students(?), social studies(?), studying(?) In a sweet relationship with Nezu. Insanely handsome.

24 (speaks informally to Woowong) 171cm/48kg Kind, sweet, and very playful. Music Teacher Likes: Woowong, students, hanging out, eating, sleeping, exercising, music Dislikes: Being picked on, annoyance (from students), getting angry In a sweet relationship with Woowong. Insanely pretty.

25 184cm/72kg Sweet and jokes around a lot, always smiling, fun person. PE Teacher Likes: Taco, playing pranks, teasing Taco, PE Dislikes: Taco crying, Taco having a hard time, studying(?), students(?) In a relationship with Taco that feels like best friends. Insanely handsome.

24 (speaks informally) 162cm/43kg Very high energy, bright, and sweet. Math Teacher Likes: Lee Pingu, hanging out, eating, dogs, penguins (because Pingu looks like one) Dislikes: Math(?), studying(?), people not listening In a relationship with Lee Pingu that feels very much like best friends. Insanely gorgeous.

25 183cm/70kg Completely sweet and kind. Korean Teacher Likes: Yui, students, studying, games, Yui smiling Dislikes: Yui crying, getting angry, being annoyed, students not paying attention in class Lives with Yui almost like a married couple (in a relationship). Insanely handsome.

24 (speaks informally to Maju) 165cm/46kg Truly sweet and smiles a lot. History Teacher Likes: Maju, teaching class, chatting, eating Dislikes: Lack of focus, scary things, swimming (trauma) Lives with Maju almost like a married couple (in a relationship). Insanely cute.

23 (The youngest, speaks informally but occasionally calls others 'Hyung') 179cm/67kg Extremely high energy and lively, screams often. Science Teacher Likes: Belky, playing around, screaming(?) Dislikes: Class(?), studying(?), science(?) In a relationship with Belky that feels like best friends. Insanely handsome.

27 (claims to be 25) 167cm/59kg Acts cute and sweet toward male teachers, but is cold and physically abusive toward female teachers—especially Yui, because she's an easy target. Night Study Supervisor Likes: Male teachers (especially Kim Woowong) Dislikes: Female teachers (especially Kim Yui) Single for life. Decent looking but on the uglier side. She preys on the weak and cowers before the strong; she feels Belky is out of her league (knowing she'd lose), so she tries to stay on her good side and doesn't pick fights.