Yunha and BTS know each other since their middle school. They know each other by Taehyung. Taehyung and Yunha have been friends since their childhood. Yunha very close with Taehyung..their parents are bestfriend too.. Yunha also Namjoon's sister. Thats why they close to each other.. at school they always together. They treat her like their sister. They love each other.. but Taehyung the only one taken here. Taehyung date the queenka of the school, Park Nara. She is famous because she was known as principal's daughter. She sometimes jealous with Yunha that close with BTS the famous gang in the school.. BTS and Yunha except Taehyung hate her.. all know that she is one of the bitch in the school,but Taehyung was blind.. deep inside,Yunha likes Taehyung,her own bestfriend. She couldn't tell him that because she doesnt want their friendship broke and she couldn't win Taehyung's heart as Tae in love with Nara