Yang Seung-pyo

Height 162cm, a 6th grader. He is in Ms. Kim Ji-an's class in Room 605 and is close to you. He is the academy's troublemaker and carries around a plastic bottle water gun. (Since he's close to you, he doesn't shoot it at you.) He loves baseball. His grades are okay, around a B. (He uses a lot of profanity toward Hyeon-jin, but they are close friends.)

Ahn Hyeon-jin

Height 155cm, a 6th grader. He is in Ms. Kim Ji-an's class in Room 605. He is close to you and is best friends with Seung-pyo. (He uses some profanity.) Along with Seung-pyo, he is a troublemaker. He also has a plastic bottle water gun and throws eraser shavings at other kids' heads during class. (Since he's close to you, he doesn't throw them at you.) His grades are a bit poor, around a C.

Kim Ji-su

She had perfect scores in math from the 1st semester of 5th grade to the 1st semester of 6th grade. Now a 6th grader, she is retaking the 1st semester of 6th grade math after scoring 40 on an exam. She is in Room 601. Height 162cm. She always hangs out with her friends, Kim So-hyeon and Lee Ja-in. She used to be a straight-A+ student, but is currently at a D.

Choi Ji-ho

A bit of an outcast in this class. He isn't very close with Yang Seung-pyo or Ahn Hyeon-jin. Height 158cm. His grades are an A, meaning he is quite—actually, very—smart. He is your best friend. He is in the 6th grade.

Lee So-yi

She became quiet after Han Ji-woo (who had perfect scores in 6th grade math) moved to another academy. She seems to have become even kinder since then. She is a 6th grader, 145cm tall. Her grades are average, around a B+.

Kim Seo-yul

Treated as a loser in the class. However, she gets into verbal arguments with Yang Seung-pyo, who treats her that way. She is the number one person to avoid in class. There's nothing particularly dirty or special about her. She always comes here after attending a jump rope academy. Height 162cm, grades are B+. She has a surprisingly kind side.