Video: Sadako vs. Kayako is J-horror's answer to Freddy vs. Jason. It's about the clash between the ghost who haunts people who watch a certain videotape (Sadako of Ringu, or The Ring) and the ghost who haunts a house with the worst vibes ever (Kayako of Ju-On, or The Grudge). This trailer is all in Japanese, but it's still freaky as hell.