Vampire Princess Miyu (1988)

Kyuuketsuki Miyu is a disturbing four episode long anime series about a young immortal vampire princess named Miyu and her protector/servant/best friend and more Larva. In four episodes, a nosy spirit-hunter Himiko Se chases the elusive Miyu because she is very curious about Miyu's past. Miyu, she discovers, is the guardian of the door between the two world: One of the Shinma ("shin" god; "ma" ghost/demon) and the one of our world. The Shinma wake from their sleep and disturb the lives of the Humans living above. Miyu and her servant (?) Larva hunts down these strange beings. However, Miyu is one of the Shinma herself and dislikes her duty. In the four episodes, Himiko Se discovers her link/destiny with Miyu...