On March 27, 2010, at the 2010 Hello! Project Shinjin Kouen 3gatsu ~Yokohama Gold!~ concert, Kudo Haruka was introduced as a new member of Hello! Pro Kenshuusei.
Kudo debuted in concert on May 1, 2010, at the Hello Fest in Odaiba Gurume Park festival.
Kudo was selected from Morning Musume's 10th generation audition to join the group on September 29, 2011, along with Iikubo Haruna, Ishida Ayumi and Sato Masaki.
The tenth generation made their official presentation on the same day they were announced as new members in the "Morning Musume Concert Tour 2011 Aki Ai Believe ~Takahashi Ai Graduation Memory Special~" concert, and they participated in a performance of the song "Tomo". In the final concert, they also participated in "Tomo" and the end of "Namidacchi".
Kudo will be in a stage play featuring Nakajima Saki, Okai Chisato and Miyamoto Karin, titled 1974 Ikunayo. The play will run from 12/14-18.
On April 18 2012, it was announced that Morning Musume's Tanaka Reina and the 9th & 10th generation members will participate in a new stage play titled Stacey’s Shoujo Saisatsu Kageki.