● Kwon yuri  - A surgeons in Jung hospital.  - 23 y/o  - Best friend With Amber  ● Amber J. Liu - A young surgeons in Jung hospital.  - 21 y/o  - Best friend with Yuri  ● Jessica Jung Sooyeon - 23 y/o  - The president of Blance Enclare  - The daughter of president at Jung hospital  ● Krystal Jung Soojung  - 21 y/o  - A model under SM entertainment - The daughter of president