Park Jiyeon the one and only daughter of the Lee’s group , the most richest group in South Korea. Have sweet , pretty and cute face. Bright personality. Friendly with people. A childish 17 years old girl. Loved by boys because of her goddess look. Hate Seungho but not o hate. Did  she actually fall with Seungho not hate him??

Yoo Seungho the Yoo's group only heir. Had a twin with different face. Smart , handsome , stylish , bad style 17 years old boy. Return to Korean after 5 years stay in the State with his twin. A caring type of person but hide it under his cold expression. Loved by girl because of his handsome figure. Hate Jiyeon for some reason. Will the hate turn to be love??

Yoo Yujeong (Kang Jiyeong) Seungho's twin which is also the only daughter in her family. Cute face with y style. A friendly and cute girl. Man runs for her but ignore them.

Jung Soojung (Krystal) Jiyeon's best friend since small. She is Jiyeon's father's PA daughter. Love Jiyeon very much. Have a crush to Choi Minho. Always have a cold expression but once she smile and laugh makes boys melt. What is happening between Minho and her??

Choi Minho , Yoo Seungho's cousin which is also his best friend. Sweet talker , killer smile and a big playboy in Hanyang High School , the best elite school in Seoul. Will he change after know Soojung??