Hitomi Yoshizawa
At age 12, Kago won the 4th National Audition of Morning Musume held by the Up-Front Works in 2000. On April 15, she, along with Rika Ishikawa, Hitomi Yoshizawa, and Nozomi Tsuji, were inducted into the idol group Morning Musume as its fourth generation. Their recording debut was in the group's ninth single "Happy Summer Wedding".