Kudō is the youngest member in history to join Morning Musume, at 11 years and 11 months old, surpassing Ai Kago's 12-year record.

Project presents: Hello Fest in Odaiba Gurume Park festival.

[2] On September 29, 2011, at a concert at Nippon Budokan, which was part of Morning Musume Concert Tour 2011 Aki Ai Believe: Takahashi Ai Sotsugyō Kinen Special, it was announced that Kudō had passed the auditions alongside three other girls: Haruna Iikubo, Ayumi Ishida and Masaki Satō, and would be joining Morning Musume.

[3] On April 29, 2017, Kudō announced her upcoming departure from Morning Musume and Hello!

[4] On December 11, at the Morning Musume Autumn concert tour Kudō graduated from the group.