Kubo is a recognized voice in Japanese radio, most notably for her work with the Nippon Broadcasting System.
As a central figure in Nogizaka46, Kubo participated in numerous singles and albums.
On September 16, 2025, Kubo announced her graduation from Nogizaka46, officially concluding her nine-year idol career on November 27, 2025, with a graduation concert at Yokohama Arena. Music and Idol Career