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.
| nudity | A woman is shown dead in a bathtub. Her breasts are briefly seen. |
| violence | Extreme action violence with lots of blood. Characters are stabbed, slashed, dismembered and shot. |
| profanity | Typical profanity for a PG-13 movie, including a few sh** and one f***. |
| frightening | Intense violence sequences with evil creatures. suggested rating R for strong bloody stylized violence and brief nudity. |
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