Kayako (貞子 vs 伽椰子, Sadako bāsasu Kayako) is a 2016 Japanese supernatural comedy horror film directed by Kōji Shiraishi. It is a crossover of the Ju-on and Ring series. The film was first teased as an April Fools' joke on April 1, 2015, but was later confirmed on December 10 to be a real production.