sentences:  She is the childhood friend of Dong-young and is also a student at Dong-young's school in order to protect her and to prevent her identity from being discovered by the other two Guardians of Heaven who were sent to capture the angel princess.Ee-jung's older sister, she cares for her brother dearly and tries to make him enjoy himself more.Despite having been bullied by Woo-hyun and saying she'd never talk to him again, Ah-hin seems to have some feelings for him, and later become a couple.