Chiemi Yusa

Chiemi Yusa is a high school student who fights for justice at the drop of a hat. She's particularly good at taking apart bullies who harass weaker, more timid classmates. The school's authorities still don't take kindly to her violent tendencies and Chiemi is on the verge of expulsion when one of her teachers throws her an offer: If she can tame the school terror, Akifumi, her troubled record will be wiped clean. (Source: mania.com)