Hazard

In Japan, the vampire-hunter Saya, who is a powerful original, is sent by her liaison with the government, David, posed as a teenage student to the Yokota High School on the eve of Halloween to hunt down vampires. Saya asks David to give a new katana to her. Soon she saves the school nurse Makiho Amano from two vampires disguised of classmates and Makiho witnesses her fight against the powerful demon.

When an awkward but brilliant Chinese student wins a scholarship into a prestigious New Zealand University, she finds a new way of achieving the popularity she craves one bloody body at a time.