Kim Min Kyu as a member of the swimming team.Kim Min Young as Lee Soo Mi, So Yeong's friend.Shin Jung Keun as the student supervisor.Jeon Mi Seon as Song Mi Kyung, Eun Byeol's mother.

Kim Se Ah as Shin Yi Yeong, Shi Jin's mother.Kim Jung Nan as Shin Jung Min, Min Joon's mother.After finding out Lee Eun Bi's real identity, she also became best friends with her.

She is jealous of her friends who seem to have a passion and tries to seek out one of her own. Lee Cho Hee as Lee Shi Jin, best friends with Go Eun Byeol and Cha Song Joo.After finding out Lee Eun Bi's real identity she also became best friends with her. She is torn between staying loyal to Eun Byeol and accepting So Yeong's friendship advances. Kim Hee Jung as Cha Song Joo, Go Eun Byeol and Lee Shi Jin's best friend.He is pricked by his guilty conscience after a massive cover-up involving the death of one of his students. Her transfer to Eun Byeol's school soon leads to mistrust and problems between the students. Jo Soo Hyang as Kang So Yeong, a school bully who found pleasure in bullying Eun Bi.Pressured by his study-centric mother to do well, he feels overwhelmed. Lee David as Park Min Joon, an intelligent and hardworking student who is always at the top of his class.He developed one sided feelings for her and confesses to her later on. He suffered a lot but everything changed when he met Lee Eun Bi and stood by her side, even when Kang So Yeong decided to make her life hell. 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. 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 starts to question the identity of Eun Byeol (who is actually Eun Bi in disguise), but as time goes by, he falls for Eun Bi unknowingly.ĭescribed by his father an idiotic and problematic child, Gong Tae Gwang is widely known as a troublemaker in school. 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 was great childhood friends with Go Eun Byeol, and had feelings for her. Nam Joo Hyuk as Han Yi An, a star swimmer at Sekang High School.Eun Byeol leaves in the end to pursue her dreams whilst Eun Bi remains in the school. When Eun Byeol's adoptive mother mistook Eun Bi as Eun Byeol, she starts to assume the identity of her twin sister. Due to bullying, Eun Bi decided to end her life but she was saved by her twin sister.

Lee Eun Bi lives in an orphanage whereas Go Eun Byeol, Eun Bi's twin sister lives with a woman who adopted her. Go Eun Byeol and Lee Eun Bi are identical twins.

Kim So Hyun as Lee Eun Bi / Go Eun Byeol.

Who are you school 2015 tae kwang