- Ring 0: Birthday a.k.a. Ringu 0: Bâsudei (リング０ バースデイ)
The prequel to the horror film Ringu, this movie provides the background story of how Sadako later became the vengeful murdering spirit. The story starts with her as a shy, somewhat withdrawn, college student who nonetheless gets involved in a drama club. The director thinks she has talent, but some of the other performers start to get jealous of the attention he gives her. Meanwhile, a reporter investigating Sadako's spiritualist mother thinks there's something very suspicious about the young woman, and arrives on campus to confront Sadako just as a series of strange deaths start sweeping through the drama club.