Here, your character is Suzy Bae. :)

Suzy Bae is a cheerful outgoing girl. She is polite, nice, clumsy,  has a cute attitude and humble. Her family runs a famous Kimchi restaurant in Busan. She is 20 years old and got a scholarship to an International University in Seoul. Due to her transfer to the college, she needs to live apart from her parents and live with her Oppa instead, in Seoul. Her Oppa is one of a well-known person as he runs a big bussiness company and invest a lot. But, his relationship with their parents is not really good  because of a 2010 tragedy which killed his fiance. He blamed his parents for not agreeing on their engagement which caused the fiance's to suicide soon after that. However, Suzy and his Oppa, Kyuhyun are very very close and could never be separated. His Oppa is very protective but childish at the same time. 

Suzy's close friend is IU. They have been best pal since elementary school. IU also got scholarship, but to another college in Seoul, which means, they will not be able to see each other very often. 

She is currently single and kind of anti social after having her heart broken a couple of years ago. With that, she never trust a guy ever again.

...Until she met this someone that makes her life upside down.