Ringu

Ringu is a movie starring Nanako Matsushima, Miki Nakatani, and Yûko Takeuchi. A reporter and her ex-husband investigate a cursed video tape that is rumored to kill the viewer seven days after watching it.
A mysterious video has been linked to a number of deaths, and when an inquisitive journalist finds the tape and views it herself, she sets in motion a chain of events that puts her own life in danger.