Kayako Saeki is a tragic figure in Japanese horror. A loving mother and wife, she was murdered by her husband Takeo and her vengeful ghost haunts the Saeki home, killing anyone who enters it. She is a symbol of the power of love and devotion, even in death, and her story serves as a warning against domestic violence and the consequences of revenge. Her ghostly presence is driven by a relentless desire to protect her dead son Toshio, who died the same day as his mother by the hands of Takeo.