You Han Yeon Sung school girl, 19 years old are a fan of the hottest kpop group now trending B1A4. You were classmates with him in middle school until he auditioned and became a singer. You never knew the dorky and nerd Sandeul would become one of the most popular guys in Korea. You live with your mother since your father passed away and your younger sister is studying in the states.

Lee Jung Hwan better known  by his stage name Sandeul. University student 20 years old, singer main vocalist of B1A4. He used to be your classmate in middle school back when you were 14. He stopped meeting up with you after he passed the audition. He's intelligent and nice. Sometimes he can be a little weird. Older than you by 3 months.

Sung Ha Mi your baby faced best friend and neighboor. She has always been with you at all moments. You go to the same school and basically live together since she's always over at your house. She was born in Busan and moved to Seoul when she was 5. You met her when she helped you when you fell and both yours and her parents were really close. She's 19 but younger by 2 months.