ONE BY ONE

 is a Japanese idol group formed in March 2021.

On December 6, 2021, they announced that the members would graduate on December 31 and the group would restart at a later date.

Members

 * Kanamaru Saki (金丸紗希; )
 * Saya Kubo (さや久保; )
 * Toda Corone (戸田ころね; )
 * Niina Mako (新菜まこ; )
 * Nishioka Kengo (西岡健吾; )
 * Hinata Rin (陽向 凛; )
 * Watanabe Kiri (渡辺樹莉; )