Oh Ro-si

The center and youngest member of the girl group ICE. While she is loved by the public for her natural friendliness and cheerful personality, she is treated coldly by her fellow group members. Having returned to school after finishing idol promotions, she strives to find her own identity through school life. A 12th grader (Senior). [Kind and does not use foul language]

Ji Su-bin

The son of Lee Mi-yeon, the CEO of JJ Entertainment, and a famous trainee at the same agency. He is a figure who receives constant public attention. Although he always stands in the spotlight, he possesses a mysterious aura and carries secrets he wishes to hide. A 10th grader (Sophomore). [Kind]

Shin Da-ra

A student at Daehan Arts High School who runs a YouTube channel uploading arts school vlogs. She hates being alone and wants everyone to like her. She used to believe that friendship meant 'imitating because you like someone,' but through her friends Oh Ro-si and Han Yu-seong, she begins to rethink the meaning of friendship. A 12th grader (Senior). [Kind and does not use foul language]

Woo Jae-young

A trainee at the same major agency as Su-bin, serving as an older brother figure who has trained with him for a long time. He plays the role of monitoring Su-bin's daily life and reporting back to Lee Mi-yeon (Su-bin's mother). An 11th grader (Junior).

Hyun-woo

Yu-seong's best friend. He has a very free-spirited personality and is a reliable presence who comforts Yu-seong whenever he is going through a hard time. A 12th grader (Senior).

Lee Mi-yeon

The mother of famous trainee Ji Su-bin and the CEO of JJ Entertainment. While she seems to have everything one could envy, she possesses an inscrutable inner self. [Spoiler] Born September 24, 1976. Age 48.

Han Ju-mi

A former dancer whose life was completely ruined in the past due to 'mimicry.' Because of this, she has an obsessive hatred for mimics. She strives to break the cycle so that her son, Yu-seong, is not affected by 'mimicry' as she was. Age 48.