The film stars Elaiza Ikeda, Takashi Tsukamoto, Hiroya Shimizu, Himeka Himejima, Ren Kiriyama, and Rie Tomosaka.
Based on the 2013 novel Tide by Koji Suzuki, Sadako is directed by Hideo Nakata and features a screenplay written by Noriaki Sugihara.
In Sadako, Elaiza Ikeda plays Mayu, a psychologist charged with analyzing a mysterious girl, is a professional Youtuber who seeks to drum up more views by investigating a burned down site where 5 people died.