 In fact, in the last two US films, she is never seen covered in blood at all (although in "The Grudge 3," Jake mentions to Dr. Sullivan that he saw her covered in blood on one occasion).In "The Grudge 3," Kayako’s younger sister named Naoko is introduced although in "Ju-on" she was an only child ("Ju-on" novel).It is not revealed how close they were as sisters, and their mother seems to have only performed her exorcisms on Kayako.