A native of Tokyo, Fuji studied acting at the Aoyama Gakuin University, and subsequently joined the Ein Theatrical Company. Her work was usually on-stage or in voice-over studios, but occasionally she would also appear in films. Her most famous role to this date is that of Kayako Saeki, the vengeful ghost in the Ju-on series, which she subsequently played in The Grudge series later on as well. She first played Kayako in the 1998 short movie Katasumi, part of the Gakkô no kaidan G collection. She then reprised her role in the direct-to-video film Ju-on and its sequel, Ju-on 2.
When director Takashi Shimizu decided to direct two additional installments for a broader theatrical release, which he called (Ju-on: The Grudge and Ju-on: The Grudge 2), Fuji played the character of Kayako twice more. When the films were subsequently remade for an American audience as The Grudge Fuji played the role yet again. She reprised the role for the last time in The Grudge 2. Fuji did not play Kayako in The Grudge 3, the third installment of The Grudge series.