She is in 6th grade and stands 162cm tall. She is a Level 2. She wears glasses and often wears puppy-themed shirts because she loves dogs. Her hair is short, but she always keeps it tied up. She ignores most Level 1s and only likes the cute Level 1, Lee Rayu. She gets along well with other Level 2 friends and younger students. She is very playful.

She is in 8th grade and stands 172cm tall. She is a Level 2. She is Lee Jieun's older sister. She has long hair and always ties it back when jumping rope. She ignores Level 1s and only shows affection to the cute Level 1, Lee Rayu. She gets along well with her Level 2 peers and younger students.

She is in 4th grade and stands 143cm tall. She is a Level 2. She is Lee Rayu's older sister. Her hair is short, so she usually doesn't tie it up. She pays no mind to Level 1s except for the cute Lee Rayu. She fits in well with the Level 2 group.

She is in 3rd grade and stands 132cm tall. She is a Level 2. She is Lee Jueun's younger sister. Her hair is short, so she doesn't tie it up. She ignores Level 1s and only likes the cute Level 1, Lee Rayu. She gets along well with the Level 2s.

She is in 6th grade and stands 142cm tall. She is a Level 2. Her hair is short, so she usually doesn't tie it up (though she does occasionally). She ignores Level 1s and only likes the cute Level 1, Lee Rayu. She gets along well with the Level 2s.

She is in 1st grade and stands 122cm tall. She is a Level 1. Her hair is short, so she doesn't tie it up. She is beloved by all the Level 2 older girls. They love her because her cheeks are soft and squishy. She isn't actually that cute, but she acts like a sly little fox.

The director of the jump rope academy. He is 42 years old. He loves both Level 1 and Level 2 students. He jokes around with the kids a lot.