I know it's too late for this but I just want you to know about the characters' background :)

SinB
Age: 19
• 1st yr college
• She's taking a course related to photography
• She has an older sister named So Jung / Sowon
• Loves taking photos
• Her mother died from cancer
• Her father, they never saw him since he left

Yerin
Age: 19
• 1st yr college
• She's taking a course related to music
• Loves playing piano

Eunha
Age: 19
• 1st yr college
• She's taking a course related to acting
• Sinb's bestfriend
• She loves to sing

Sowon
Age: 23
• She already graduated from college
• She's working as a fashion designer and  model in a company
• Sinb's older sister

Yuju
Age: 19
• 1st yr college
• She's taking a course related to music also
• Yerin's bestfriend

Umji
Age: 18
• She's taking a course related to photography also
• Sinb's classmate

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I don't have much idea about that courses T.T
Sorry guys I hope it's okay :/ again, it's my first time to write that's why but I'll try :D (sorry for my english T.T)