Chanyeol comes from a wealthy family. His father runs the top company in the country, Park Corporations. Being the only son, he is the heir to the company. Being a high school student who has yet to learn about business, he gets attracted to the the Head Secretary of Park Corporations, Byun Baekhyun. 

However, Chanyeol's life is destroyed when Baekhyun marries his father and becomes his step mother. 

Park Chanyeol 

19 year old high schooler who is a typical spoilt brat, however, he was very much different before his mother passed away

In love with the company's secretary but would never admit it

Very close to his sister, Yoora, who played the role of his mother when their mother died. 

Nicknamed as the touble maker at school, as he would escape from any trouble, being the next heir to Park Corporations. 

Byun Baekhyun 

28 year old secretary who is a total opposite from Chanyeol as he grew up in difficult conditions at home

Mr Park treated him very well, as he has worked for a very long time, soon they fell in love. 

He has known Chanyeol from the day he started work, as a secretary he did additional jobs, actually he was more of a personal assistant, even taking care of the Park household. 

He only treated Chanyeol as a little brother. 

Park Yura 

26 year old designer who made a name to her own brand, many would criticise her saying she just had a big support from her father. Truth was, she went throught a lot of harships to be today's top designer. 

Very close with her brother

Park Hoon 

Chanyeol's father, aged 50, He is a very responsible man

Relationship with his son became bad after the death of his wife 

and other exo characters :P