Tachibana Kotomi is a founding member of CANDY TUNE, a former founding member of Ange et Folletta under the name Kotomi and Aficionado under the name Oshima Kotomi (大島琴未).

She graduated from Aficionado on December 7, 2021, due to the expiration of her contract.[1]

She graduated from Ange et Folletta on December 7, 2021.

She was revealed as a member of CANDY TUNE on February 14, 2023.

Nicknames: Kocchan (こっちゃん)