: Despite her pride, Hye-mi drags her loyal "shadow," Yoon Baek-hee, to the Kirin auditions. While Hye-mi treats Baek-hee as a mere sidekick, the episode sets the stage for their future rivalry.
: A gifted but arrogant soprano forced into the world of K-pop.
: Hye-mi is hunted by debt collectors who eventually offer her a way out: she must enter Kirin Arts High School and debut as a singer to pay off her father's massive debt.
: A rebel with a natural talent for dance and a hidden connection to Hye-mi.
: We encounter Jin-gook, a talented street dancer and troubled student, who first crosses paths with Hye-mi when he retrieves her dropped wallet.
: The visionary director of Kirin Arts High School who personally selects special admission students.