"Ringu" is a Japanese horror film directed by Hideo Nakata, released in 1998. The story follows a journalist named Reiko Asakawa who investigates a mysterious videotape that causes viewers to die seven days after watching it. As she delves deeper into the mystery, she discovers a connection to a young girl named Sadako Yamamura, whose tragic past is central to the curse. The film is based on the novel "Ring" by Koji Suzuki and has been influential in the horror genre, leading to several sequels and remakes, including the American adaptation titled "The Ring." "Ringu" is known for its eerie atmosphere and psychological tension, making it a landmark in Japanese horror cinema.