6nin no Onna Kyoushi

I'm now on winter holiday. I plan to go travelling and playing with friends... I'll never study! But one day, my mother sends me on an errand and I come to a prestige high school where my aunt works as the school president. "Well, I don't like her.... Ok, I'll just complete my errand soon and go buying a new CD." I didn't even know if a tragedy would happen inside the school...