No Younghee, a girl who knows how to use her skills professionally. 
Do not ever trust what you see on the outside because you would not know what it is on the inside.
And that related to No Younghee.
A girl who look feminine but actually a rebel on the inside.
Well technically she is not that rebel, it just she knows how to defence herself.
Aside from that shes knows how to find troubles, create troubles and invent troubles.
And that is obviously No Younghee.
Because of that she keep on transfering schools with the troubles that she made.
But now it is her last and one final chance of transfering school before graduating.
Will she ever get through high school without creating trouble and transfer??