Very brief introduction to the characters and the main character's (Sooyun) family and background.

 Sooyun's dad died when she was 16 years old.

She has a step mother and two stepsisters.

Sooyun was born in Korea and moved to America with her dad when she was 10.

Both her and one of her stepsisters go to UCLA.

Sooyun is 20 and her stepsisters are 22 (Fiona) and 23 (Jade).

Sooyun does civil engineering and Fiona does literature 101. Jade already finished uni/college and is pursuing a singing career.