Backstreet Rookie — Characters & Cast

To run an honest, warm convenience store that supports his family, evolving into a desire to protect Saet-byul and build a genuine future with her.

Begins as an overly cautious, timid manager walked over by his corporate girlfriend. He gains the courage to set firm boundaries, leave toxic corporate dynamics behind, stand up for his family's pride, and explicitly express his love for Saet-byul.

To protect her younger sister Eun-byul and become a worthy, respectable person in Dae-hyun's eyes.

Starts as an orphaned, fiercely protective martial artist labeled as a delinquent. She channels her energy into store management, studies diligently for her high school diploma (GED), learns to resolve conflicts maturely without violence, and grows into a capable, confident young woman.

Maintaining her high social standing and corporate career while attempting to preserve her romantic relationship on her own terms.

Begins as Dae-hyun's girlfriend and corporate superior. Her insecurity over Saet-byul and deference to her wealthy mother's demands lead her to repeatedly hide Dae-hyun from her peers, eventually learning that love cannot be controlled by executive authority.

Winning Yeon-joo's love and proving his superiority over Dae-hyun.

Serves as Director of headquarters who uses wealth and executive position to woo Yeon-joo and undermine Dae-hyun, eventually realizing monetary privilege cannot buy genuine affection.

Escaping poverty and gaining fame as an idol star, which evolves into appreciating her sister's love.

Starts as a reckless high schooler chasing idol stardom who clashes with Saet-byul. After getting entangled in a blackmail scandal, she realizes her sister's enormous sacrifices, leading to reconciliation and maturity.