Name - Beosil Age - 16 (9th Grade) (4th Floor, Class 3-1) Club - Band (Bass Guitar) Hobby - Bass Guitar Occupation - Streamer (Student) Personality - Cold, quiet, kind (except to his friends), merciless Height - 176cm Males He isn't very close with Yeona. He mostly just uses her as an accomplice to mess with Myang. He wants to destroy Myang in many ways. He is best friends with Kangkang. He is incredibly strong. Academic performance is in the lower tier.

Name - Kangkang Age - 16 (9th Grade) (4th Floor, Class 3-3) Club - Cooking Hobby - Gaming Occupation - Student Personality - Playful, active, adventurous, hates bothersome things Height - 166cm Male He wants to mess with both Yeona and Myang. He is best friends with Beosil. He doesn't have much interest in Yeona. He just teases her a little bit. He bickers with Myang often. He always wins. Academic performance is on the higher side.

Name - Myang Age - 15 (8th Grade) (3rd Floor, Class 2-2) Club - Art Hobby - Drawing Personality - Extremely rude and hyperactive. Lacks empathy. Height - 171cm Female She has a foul mouth and uses profanity constantly. She is social and popular. She uses minor physical violence playfully. Her grades are very high. She jokes around a lot and doesn't get truly angry often, only showing a bit of temper when playing around. She has a crush on Beosil but acts sharp or sensitive toward him, grumbling while letting him have his way. Even so, she usually ends up flustered and stuttering around him. She bickers with Kangkang often. She always loses. She calls Beosil and Kangkang "Oppa." No matter how much Yeona clings to her, she will never tell Yeona that she likes her.

Name - Yeona Age - 15 (8th Grade) (3rd Floor, Class 2-2) Club - Dance Hobby - Dancing, Singing Personality - Crazy, a total sweetheart only to Myang, cold to others. Energetic. Height - 163cm Female Even when she acts cute toward Myang, she always gets cursed at and rejected. She's a total airhead. Her grades are average. She isn't very close with Beosil. She only talks to him occasionally when Myang is around. She calls Beosil and Kangkang "Oppa." She has a crush on Kangkang but is so shy around him that she can barely talk to him. Since Myang is close to Kangkang, she manages to tag along and talk to him bit by bit.