Sakagami was born on July 29, 1974 in Nagasaki, Japan. She dropped out of Kaetsu Ariake Senior High School.
Kaori Sakagami initially debuted as an actress. In 1988, she officially became an Idol singer, while also participating in television dramas and variety shows. Sakagami retired from singing in 1990.
Sakagami began acting in 1987 with small roles in television dramas, including various Taiga dramas. She had her film debut the following year, before starring as Ai Amano in the 1991 film, Video Girl Ai. In 1995, Sakagami costarred as Sakurako Sanjo in Hana Yori Dango.
|1991||Video Girl Ai||Ai Amano|
|1995||Hana Yori Dango||Sakurako Sanjo|
|1989||Kasuga no Tsubone||Oeyo|
|1990||Yonimo Kimyo na Monogatari: Daiichi series||Natsuko Yamazaki|
|1991||Yonimo Kimyo na Monogatari: Dai 2 series||Midori Okamura|
|2001||Ultraman Cosmos||Shinobu Mizuki|
|2004||Kenji Sawaki mMasao: Satsui no Bunkiten||Yuko Takarabe|