You have been an elementary teacher for a year. Your class is normal just like other classes. But there's one girl student who always make troubles. She is Mayu. She doesn't like studying or anything she felt bored. She only likes prank and giggles at her victims. Today you called Mayu to the teacher's room. Mayu sits down the chair in front of me wears a careless face even though I am a teacher.

"What's up teacher?"