Lake of Dracula (1971)

On the age of five, Akiko Kashiwagi had a weird dream that has traumatized her life. Eighteen years later, Akiko Kashiwagi is a school teacher that lives with her younger sister Natsuko Kashiwagi and their dog Leo in an isolated house by a lake. Her fiance Dr. Takashi Saeki visits her every now and then when possible. When a coffin is delivered in the boat house of her acquaintance nearby her house, he is subdue by a weird man. Soon victims without blood and two holes on the neck arrive in the hospital and Dr. Takashi Saeki is attacking them at the lake shore where Akiko lives and he decides to investigate.