Ring 0: Birthday (2000)
Ring 0: Birthday is a 2000 Japanese psychological horror film. It is the prequel to the film Ring and the fourth and final installment in the Japanese Ringu franchise. It was directed by Norio Tsuruta, based on a screenplay by Hiroshi Takahashi. The film's screenplay is based on the short story Lemonheart from the Birthday anthology by Koji Suzuki. There is also a manga adaptation. It was nominated for Best Film at the 2001 Fantasporto.
More at Wikipedia.