You - Sunghee (Freshman)
She's sweet like an angel to most people, but can become the devil in a flash if you get on her bad side. Gets tutoring from her oldest brother, Yunho. Of course, because of this, she too is a straight A student. 

Jung Yunho (Senior)
He himself is the living legend of KPOP High School. The Student Council President. Trusted by all the teachers. Straight A grades. Loved by girls and respected/feared by guys. Captain of the soccer team. 

Lee Hyukjae (Junior)
One word: dork. But because of his fun and loving personality, he is loved by everyone. His grades... not so good. But that doesn't matter. Teachers still loved him because of his character. And of course, president of the famous dance club. 

Park Sanghyun (Sophomore)
He goes by the name of Thunder. His perfectly formed face and cold personality attracts thousands of girls, in and out of KPOP High School. There are at least 10 girls waiting for him outside of the school gates when school ends. He tends to not understand why girls obsess over him, and ignores the fangirls. But what he doesn't know is.. hard to get, is even hotter. 

Seok Chaejin (Freshman)
The youngest of the four guys. But still, he's my oppa by a couple of months. He busts aegyo without knowing it, killing the fangirls from cuteness overload. He isn't use to being around girls because he went to an all guys lower/middle school. But his innocence and shyness attracts all the hungry noonas. Yes, he's a noona killer. 

"Yah, Sunghee, get in oppa's car right now! You aren't walking to school, your legs are going to get tired!"
Yunho oppa. The spoiler.

"Sunghee, give oppa his 'work hard at school' kiss~"
Hyukjae oppa. The pabo.

"Don't you dare even think of hitting on my little sister. Run along now."
Sanghyun oppa. The over-protective.

"Su-sunghee.. "
Chaejin oppa. The helpless-without-my-sister.

Welcome to my life.