Im Inyoung: was 18 years old (when she died), innocent, cheerful, lovable, works hard, is in contract with God.  If she fails her mission, she will disappear completely but if she completes it then she will be able to have her life back on earth.  Angel like face. attends SU (temporarily).

Yong Junhyung: 20 years old, cold, rarely smiles, lost happiness, after he got abandoned by his parents at the age of 15, he lost his original cheerful attitude and turned cold.  God thought that it was finally time for Junhyung to be happy again so he send Inyoung.  Junhyung is loved by a lot of girls because he is handsome but he doesnt rlly like any of them.  Attends SU (seoul university)

Jinho: Inyoung's guardian angel, on earth: Inyoung's pet dog (small Maltese), can lose temper easily because of Inyoung's clumsiness; loves Inyoung and wishes that she would be able to get her life back; male

Kim Hyuna: 20 years old, loves Junhyung (fan girl), doesnt like that Inyoung, mean (mostly to Inyoung)

Kang Yumi: 18 years old, smart, people dont like her because they think shes too nerdy, wears glasses, becomes friends with Inyoung, is hated by Hyuna and her friends for no reason, gets bullied easily