Who Are You: School 2015 (; also known in Japan as Love Generation) is a 2015 South Korean television series starring Kim So-hyun, Nam Joo-hyuk, and Yook Sung-jae. It aired on KBS2 from April 27 to June 16, 2015, every Monday and Tuesday at 21:55 (KST) for 16 episodes. It is the sixth installment of KBS's School series which premiered in 1999.
The final episode received a 8.2% nationwide ratings. It was well-received and popular overseas, it established a strong following among young viewers worldwide which led to increased recognition for its cast.
Go Eun-byul and Lee Eun-bi (both played by Kim So-hyun) are identical twins, separated after one is adopted at the age of 5. Eun-bi lives at the Love House, an orphanage in Tongyeong, South Gyeongsang Province, where the younger residents look up to her as a mother figure. However, she hides the fact that she is bullied at school by a gang of mean girls led by Kang So-young (Cho Soo-hyang), while teachers turn a blind eye.
On the other hand, Go Eun-byul is studying at Sekang High School, the most prestigious private high school in Seoul's Gangnam District. Eun-byul's best friend is Han Yi-an (Nam Joo-hyuk), the school's star swimmer and is in love with her since childhood.
However, only Eun-byul is aware of the other's existence. Unlike the cheerful Eun-bi, Eun-byul is prickly and secretive.
Go Eun-byul and Lee Eun-bi are identical twins. Lee Eun-bi lives in an orphanage whereas Go Eun-byul, Eun-bi's twin sister lives with a woman who adopted her. Due to bullying, Eun-bi decided to end her life but she was saved by her twin sister. Eun-bi had amnesia after that. When Eun-byul's adoptive mother mistook Eun-bi as Eun-byul, she starts to assume the identity of her twin sister. Eun-byul leaves in the end to pursue her dreams whilst Eun-bi remains in the school.
Described by his father as an idiotic and problematic child, Gong Tae-kwang is widely known as a troublemaker in school. His father is the director of Sekang High School and his mother is a famous actress, but his classmates don't know about this. He is portrayed as a happy-go-lucky person who just wanted to cause trouble, but behind his smile, he was actually a struggling child with a painful life. He suffered a lot but everything changed when he met Lee Eun-bi and stood by her side, even when Kang So-young decided to make her life hell. He developed one sided feelings for her and confesses to her later on.
A star swimmer at Sekang High School. He was great childhood friend with Go Eun-byul, and had feelings for her. He is loyal to his friends and although from a poor background, works really hard to help his father at the same time to become a national champion in swimming. He starts to question the identity of Eun-byul (who is actually Eun-bi in disguise), but as time goes by, he falls for Eun-bi unknowingly.
He is pricked by his guilty conscience after a massive cover-up involving the death of one of his students.
An intelligent and hardworking student who is always at the top of his class. Pressured by his study-centric mother to do well, he feels overwhelmed.
Go Eun-byul and Lee Shi-jin's best friend. She is torn between staying loyal to Eun-byul and accepting So-young's friendship advances. After finding out Lee Eun-bi's real identity, she also became best friends with her.
She is best friends with Go Eun-byul and Cha Sung-joo. She is jealous of her friends who seem to have a passion and tries to seek out one of her own. After finding out Lee Eun-bi's real identity, she also became best friends with her.
A school bully who found pleasure in bullying Eun-bi. Her transfer to Eun-byul's school soon leads to mistrust and problems between the students.
The leader of the class's delinquent gang who often harasses Tae-kwang. He was Hae-na's boyfriend.
A member of Ki-tae's gang