Mitsuo Senda

Toron, a young tyrannosaurus boy, is carried off downstream and loses his memory. While making his way back home, he discovers new friends and finds out that working together is the only way forward in life.

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.