is a Japanese singer and actress. She has released 12 singles and 2 albums on the Avex Trax label in Japan. She has also performed with the musical units and A Girls.
On May 25, 2005, Kayo released her seventh single . It was released by Avex Trax. "Kokoro no Wakusei ~Little Planets~" was used as the first ending theme for the anime The Law of Ueki. The b-side track is a cover of one of Kylie Minogue's older singles. On July 27, 2005, Kayo released her eighth single, . It was released by AVEX Records. The song was used as the AT-X Geki Natsu HAPPY! campaign image song. First pressings of the single included a picture label disc and poster.