The Boy Who Doesn't Smile

In the Seoul National University there we're many rich students,and also some poor students,Jisoo is one of them..she is the transferrie student who met a cold and a boy who doesn't smile..his name is Jungkook,
Aishhh,can't you just smile,just a little bit?~Jisoo
Why would i?besides there is no funny thing here~Jungkook