Her favorite Japanese artists are Boa and Ayu-chan.
In her "Pretty Guardian Sailor Moon" post-filming interview, asked fans to call her Rei-chan if they see her on the street. She has also played numerous characters named Reiko (her show business name in PGSM).
Out of the PGSM girls, Keiko is closest to "KomacChan" (Ayaka Komatsu).
One of the winners of Japanese "Seventeen" Magazine's "Miss Seventeen 2003".