- Name: Ono Kotomi (小野琴己)
- Birthday: October 7, 2002
- Birthplace: Tokyo, Japan
- Bloodtype: B
- Height: 160cm
- Specialty: Model walk, posing
- Hobbies: Watching foreign movies
- Looks Up To: Sasaki Rikako
- Hello! Project groups:
- Hello! Pro Kenshuusei (2016–)
-  JK Ninja Girls (JKニンジャガールズ)
- Music Videos
-  Nega Poji Poji (ネガポジポジ)
- Made her first live appearance at the "Hello! Pro Kenshuusei Recital February/March 2016 ~SINGING!~" event on February 13, 2016.
- Was previously enrolled in the Avex Artist Academy dance program in Tokyo.
- Participated in the 4th generation 2015 ANGERME Shin Member Audition, but was not chosen as a winner.
- Her favorite music genres are J-Pop and western music.
- Her favorite sport is track & field.
- Favorite school subject is English.
- Her motto is "Self, do your best!"
- Favorite foods are marshmallow and cotton candy.
- Considers herself an airhead.
- Her favorite Hello! Project songs are "Only you" by Morning Musume, "Akai Freesia" by Melon Kinenbi, and "Nakimushi Shounen" by Buono!.