She was signed to Giza Studio and Tent House after she came in second place on fifth season of Super Starlight Contest, the audition hosted by Being.
In August 2005, Takei released the single "Sekai Tomete", which served as the ending theme song for the Japanese animated television series, Case Closed.
After graduating from high school, she began her music activities, such as performing in live concerts, in the Kansai area.
Through her work in the independent music scene, she released a cover album with the support of the members of the fusion band Dimension.
In 2005, she released her 5th single Sekai Tomete which was used as ending theme for TV anime series Detective Conan.