"I will kill those boys,  Hwannie," said Hakyeon in anger while cleaning her friend's hair from the flour.  Some students think that its a good plan to pour flour to her friend and make her mad. 

"Don't worry Yeonnie.  Its not the first time," answer Jaehwan,  still struggling to brush off the flour from her hair and face. 

"Here, use this towel. Its clean.  I'm not using it," said Taekwoon while giving his towel to the girls. 

"Sorry for disturbing, may I know where principal office?" Ask Wonshik to the tan girl, the flour girl and the cold looking boy.