Kawabe released the single "Be Your Girl" on April 27, 2004. This became the ending theme song to the anime Elfen Lied, and her other song, "Hoshi ni Negai o" was the end theme song to Otogizoshi. Her next single, "Shining", was released on November 24, 2004.
On January 25, 2005, the single "Kizunairo" was released. This included the songs "Kizunairo", "I Can't Wait", and "Hidamari". The song "I Can't Wait" was used as the theme song to the Japanese version of the show Lizzie McGuire. Shortly after this, was the release of her first full album, Brilliance. This album contained eleven songs in total. This was followed by the single "Candy Baby" in July 2005.
Almost a year passed before any more releases were made, but in April 2006, Kawabe released another single, "Sakura Kiss", which had two songs, the song "Sakura Kiss" being the theme song to the anime Ouran High School Host Club. The single reached number 71 on the Oricon 200 and charted for six weeks.
Kawabe is a weekly host on a radio station in Harajuku, and has returned to the modeling world.