Jung Eunyeol or better known as Aina is the sister of the twins Jung Sungyeol and Jung Hyunyeol. Aina and Jackson were madly in love since Elementary school. They always share food when Lunch. Aina always goes to Jackson's house and stay there for a few hours cuddling and kissing. What Aina didn't know is that Jackson's Little Brother name Bambam took a like at Aina since they know each other few years ago. Everything change when they enter