Sandara Park - a lady from Busan. She belongs to a well-known family of businessmen. In fact, they own most of the finest hotels and restaurants in Seoul, Philippines and Japan. Just like Jiyong, she is Ms. Have-it-all : beauty, intelligence, talent, wealth and a happy love-life. Everyone loves her in school (except for some es). She is very friendly and cheerful but she knows when to fight back and kick es' off.

Badass Angel -- that is who she is.

 But unknown to everyone, she grew up lonely. Her parents had to work overtime to expand their business which she will eventually inherit soon, leaving her with just nannies around. She was sent to the Philippines for her safety when business competition in Korea became a mess and it took six years to fix it. 

Park came back to Korea and chose to continue her studies in YGU. Her mom disagrees with the idea of letting her stay in Seoul but was convinced by her dad BUT with one condition -- she will be followed by her bodyguards 24/7. Though Sandara doesn't like the scheme, she had no choice but to accept it. 
 

On her first year in YGU, she met Lee Donghae and believed that he was the one she has been looking for. After a year of being friends, they ended up being in a more complex relationship. 
 

Mr. and Mrs. Park received a letter from an unknown person, which they think was a competitor, saying that Dara's life was at stake.. Again. Her dad immediately went to Seoul to fetch her and to send her back to Busan. When Mr. Park arrived and located Dara through his bodyguards, he saw Dara having a good lunch with the Kwons. Dara was surprised to see her Dad but she then introduced Donghae to him and his parents -