Park Hyemi ; (20 years)
a 20 year old girl who is madly in love with Lee Kiseop, her boyfriend. She has a very cute and bubbly personality, and would never hurt a fly. No matter who it is, she will never fail to make everyone happy. She lives with this personality, because her father left her and her mother when she was 7 years old, and doesn't want anyone else to feel the same misery as her. She works in an orphanage with Kiseop, owned by his parents.

Lee Kiseop; (21 years)
a 21 year old boy, who is also Park Hyemi's boyfriend. He was a very kind person, but has recently changed. The cause of his change of personality is a mystery, and Hyemi cares the least. She just wants to love him. Not being the same boy he was, he is now very mysterious and speaks cruel words, especially to Hyemi. And behind Hyemi's back, he is now seeing a different girl - Kim Hae In.

Kim Hae In; (20 years)
a girl, the same age as Hyemi. She was Park Hyemi's best friend, and has always been there for her ever since they met in Elementary School. She is also usually a very nice girl, but something has changed her.......

Nam Woohyun; (21 years)
Lee Kiseop's best friend, who has always had a crush on Hyemi. He is very kind, nice and understands everyone easily. He is a great cook, and loves making food for his friends and family.