Lyrics Of Who Are You? (School 2015)

Go Eun-byul ( 고은별)and Lee Eun-bi (이은비) are identical twins separated at birth. Eun-bi lives at House of Love, 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 (강소영) , 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 friends are Cha Song-joo (차송주) and Lee Shi-jin (이시진) , and she shares a mutual attraction with Han Yi-an (한이안) , the school's star swimmer. They have been friends since they were 8.

Eun-bi and Eun-byul look exactly alike, but only Eun-byul is aware if the other's existence. Unlike the cheerful Eun-bi, Eun-byul is prickly and secretive.