It's about Love Story.. The character is :

- IU / Lee Ji Eun

 

#Cute

#Shy girl

#But also fun

#Pretty

#Smart

#Kind

 

- Wooyoung

#Handsome

#Funny

#But sometimes, he's kind

#Suzy's brother

 

- Jiyeon

#IU's friend

#Pretty

#Kind

#But sometimes, she's make IU angry

 

- Suzy

#IU's friend

#Cold-heart

#Arrogant

#But actually, she's nice

#Has many CRUSH

#Wooyoung's sister

 

- Taecyeon

#He might be look  like a beast

#But actually he's funny

#He's kind

#But he's so lame thinking

 

- Junho

#Handsome

#Smart

#Funny

#But 'abnormal'

 

- Kim Soo Hyun

#He's handome

#Cheerful person

#Suzy's CRUSH

#But fall in love with Ji Eun / IU

#He's kind too

 

- Nichkhun

#Handsome

#Smart

#But rather spoiled

#Jiyeon's CRUSH

#But fall in love with Ji Eun / IU

 

- Seulong

#He's not to handsome

#But many girls love him

#Because he's genius at sport

#But he's kind of not-important boy on Ji Eun's eyes

#Fall in love with Suzy

 

- Chansung

#He's cute

#Ji Eun's classmate

#Fall in love with Jiyeon

 

- Yoona

#Kind

#Hates Suzy because she thinks Suzy is sooo arrogant

#But nice to Ji Eun

#Taecyeon's CRUSH (beside Ji Eun)

 

- Jessica

#Kind

#But sometimes act cool

#That's why Suzy hates her

#Taecyeon's girlfriend

 

- Tiffany

#Pretty

#Smart

#Sporty

#Chansung's CRUSH

 

- Jinwoon

#He's kind

#But lame

#Jiyeon's CRUSH

 

- Leeteuk

#He's quiet person

#But sometimes can be so attractive

#Fall in love with Ji Eun

 

- Eunhyuk

#He's naughty

#But he's funny

#Suzy's CRUSH

#But never care about girl

 

- Donghae

#Senior

#Handsome

#good at playing drum

#Suzy's CRUSH

#Loves Ji Eun because of her voice

 

- Kwnghee

#Playboy

#Not-important person

#Loves Suzy

#Naughty

#Many people hate him

#Stupid

 

It's about Ji Eun and her friends' love story..

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If there any addition of character, I'll update soon