Navigating the sprawling ensemble of a classic high school K-drama can get tricky, especially when characters swap identities. Released by KBS, Who Are You: School 2015 remains a landmark entry in the long-running School franchise. The series blends teenage identity crises, intense school bullying, and intricate romance.
At its core, the story follows identical twins separated at birth whose lives violently collide after one assumes the other's life at Segang High School. Understanding who plays who, along with their narrative arcs, helps untangle the mystery behind the drama's emotional core.
Main Cast and Lead Characters
The narrative revolves around a central trio navigating the treacherous social hierarchy of Segang High School. Each lead actor carries a distinct emotional burden that drives the mystery forward.
Lee Eun Bi and Go Eun Byul (Played by Kim So Hyun)
Kim So Hyun takes on the dual role of identical twins with vastly different upbringings.
- Lee Eun Bi: Raised in an orphanage in Tongyeong, Eun Bi suffers relentless bullying from classmates led by Kang So Young. After a harrowing suicide attempt, she loses her memory and gets mistaken for her twin, Go Eun Byul, starting a brand-new life in Seoul.
- Go Eun Byul: Adopted into a comfortable household in Seoul, Eun Byul grows up confident, sharp, and fiercely protective of her friends. Her mysterious disappearance sets the entire plot into motion.
Han Yi Ahn (Played by Nam Joo Hyuk)
Han Yi Ahn is Segang High's star swimmer and a national athlete prospect. He has harbored deep feelings for Go Eun Byul since childhood. When Eun Bi takes Eun Byul's place, Yi Ahn senses subtle changes in her behavior but remains fiercely loyal, struggling with his shifting affections as the truth slowly leaks out.
Gong Tae Kwang (Played by Yook Sung Jae)
As the resident troublemaker of Class 2-3, Gong Tae Kwang hides a painful home life behind a rebellious exterior. His father is the cold foundation director of the school, and his mother is a distant celebrity. Tae Kwang becomes the first person to figure out Eun Bi's true identity, acting as her protector and confidant while bringing much-needed comic relief and raw vulnerability to the screen.
Supporting Students of Class 2-3
Segang High School's Class 2-3 serves as a microcosm of intense academic pressure and teenage cruelty. Several supporting students fuel the central conflicts.
- Kang So Young (Played by Jo Soo Hyang): The primary antagonist. So Young made Eun Bi's life a living hell in Tongyeong. When she transfers to Segang High and recognizes Eun Bi under the guise of Eun Byul, she stops at nothing to expose her.
- Cha Song Joo (Played by Kim Hee Jung): Eun Byul's loyal best friend who dreams of becoming an idol. She notices her friend's personality shifts early on but stands by her regardless.
- Lee Shi Jin (Played by Lee Cho Hee): The third member of the close-knit friend group, grappling with the immense pressure of college entrance exams and parental expectations.
- Park Min Joon (Played by Lee David): The stressed class president whose life revolves around academic perfection, pushing him to the absolute brink of a breakdown.
Faculty and Parents
The adults in the series highlight the systemic pressures facing Korean youth, from corrupt school boards to overbearing parents.
- Kim Joon Suk (Played by Lee Pil Mo): The homeroom teacher of Class 2-3 who genuinely cares for his students' well-being, often clashing with the school administration to protect them.
- Song Mi Kyung (Played by Jeon Mi Sun): Eun Byul's adoptive mother, whose unconditional love for her daughters anchors the emotional weight of the twin switch.
- Gong Jae Ho (Played by Jun Noh Min): Tae Kwang's demanding father and the foundation director, whose strict authoritarian style drives a wedge in his family.
Frequently Asked Questions
Do the twins reunite in the end?
Yes. Both sisters survive the ordeals of the plot. Eun Byul returns to reclaim her original identity after sorting out her life choices, while Eun Bi builds a fresh start for herself with the support of her friends and adoptive mother.
Who does Lee Eun Bi end up with?
Eun Bi ends up choosing Gong Tae Kwang, appreciating how he stood by her through every hardship, while Han Yi Ahn remains a cherished childhood friend as he focuses on his swimming career.
Where can I watch Who Are You: School 2015?
The drama is available on streaming platforms such as Viki and Kocowa in select regions, depending on local licensing agreements.
