Mark-
19 years a cheerful boy. From wealthy family.lives with his brother jinyoung.Sana- 19 year old. So cold outside.but very broken inside. Moving on from her past.gets trauma sometime.
Jinyoung-marks brother. Nateons boyfriend.but didn't met sana.
Nayeon-sana friend. She is like her family.jinyoungs girlfriend but she never met mark before.
Sana is a rich girl. Who is abused by her own parents. So she left her home. And lives with nayeon from last 2 years. She is like her family. Nayeon was a orphan before. Nayeon loves sana the most in her whole life.and she has a boyfriend.who left LA for some work for 1 year but now back to Korea. She never introduced her bf to sana they kept their relationship secret. So sana and mark didn't met their brothers/ best friends bf or gf.
(Some got7 and twice members)