Sung-hee – ordinary girl, 20 years old. A beautiful young woman with around brown eye, Taeil’s girlfriend for 3 years ever since debut. She always there for taeil’s. After the debut, Taeil and her grow distance and didn’t have much time for each other.

Lee taeil – 21 years old, despite his vocal line is great he make his first debut. Sung- hee is his inspiration. Despite the fact that he always have a low esteem and lack of confident his close best friend Jihoon(P.O) be there when he need an advices. Although he has an angel voices, he is shy. A vocal line in Block b.