Kazumi came with her husband, Katsuya Tokunaga and her mother-in-law, Sachie, to the Saeki House. She cannot sleep because Sachie's constant stirring. While she was sleeping on the couch in the living room she is startled by crashing noise and thought it was Sachie but she sees fresh hand prints on the door and soon encounters Mar, who is dragged away by Toshio. She is lured to her bedroom and then trapped by the ghosts.
Later, Katsuya arrives from work and finds the house as a mess and then her wife on the bed unable to move or speak as her husband prepares to call the ambulance. He sensed Toshio's presence in the room as her eyes widen as the closet doors shake, Kazumi then yelped a final scream in agony and dies in the bed, much to Katsuya's horror and sadness.
Her body was found in the attic along her husband's by the detectives.
- It may be interesting to note that Kazumi's actress, Shuri Matsuda, also plays a background nurse in The Grudge 2.