STARRING :

CHOI SIWON :

HE IS THE HEARTTHROB IN THEIR SCHOOL . HE NEVER STUDIED HARD .HE WAS JUST HAVING FUN ALONE . HE ALWAYS GOTTING THE LOWEST GRADE IN THEIR SECTION . HE DREAMS TO BECAME AN GREAT ACTOR AND MODEL BUT HIS PARENTS WANT HIM TO BE AN BUSINESS MAN . BECAUSE OF THAT , HE ALWAYS ANGRY AND DECIDE TO MAKE HIS GRADE BE THE LOWEST . HE LIKES YOONA BUT NEVER CONFESSED TO HER.

IM YOONA :

SHE IS THE SCHOOL PRETTIEST GIRL . SHE IS AN HONORED STUDENT BUT HER GRADES BECAME LOWER BECAUSE OF HER CRUSH NAMED TAECYEON WHO ALWAYS SUITING SUZY . SHE JEALOUS OF SUZY . SHE WAS HEARTBROKEN SO SHE ALWAYS BEING ALONE . SHE END UP HAVING SECRET FEELING FOR SIWON BECAUSE EVEN IF HE GOT THE LOWEST GRADE . HE STILL STRONG EVEN IF HE HAD PROBLEM .SHE WANT TO BECAME AN ACTRESS AND MODEL .

OK TAECYEON :

HE IS THE SCHOOL TROUBLEMAKER . HE ALWAYS BEING IN PRINCIPAL'S OFFICE . EVEN IF HE'S TROUBLE MAKER , HE STILL GOT HIGH GRADES . HE DREAMS TO BECAME A DANCER .

BAE SUZY :

SHE WAS THE SCHOOL BRAT GIRL . SHE ALWAYS FOLLOWING MINHO BECAUSE SHE LIKES HIM BUT MINHO NEVER BE FRIENDS TO HER . TAECYEON ALWAYS BY HER SIDE WHEN SHE WAS SAD SO SHE START TO LIKE HIM . SHE DREAM TO BECAME A SINGER .

CHOI MINHO :

HE IS THE STUDENT WHO ALWAYS GOTTING HIGH GRADES . HE IS SIWON'S YOUNGER BROTHER . HE AND SULLI WAS CHILDHOOD FRIENDS . MINHO AND SULLI LIKE EACH OTHER BUY SHY TO CONFESS . HE DREAM THAT SOMEDAY , HIS PARENTS WILL GIVE ATTENTION TO HIM BECAUSE THEIR PARENT'S FAVORITE WAS SIWON , EVEN IF HE GOT LOW GRADES . 

CHOI SULLI :

SHE IS AN NICE GIRL .SHE IS SUZY'S COUSIN . SHE LIKES MINHO BUT SHY TO CONFESS . SHE DREAMS THAT ONE DAY , MINHO WILL CONFESS TO HER AND THEY WILL MARRIED .