ayaka is a Japanese singer and idol. She is a member and second generation leader of the group lyrical school.
- Stage Name: ayaka
- Real Name: Obu Ayaka (大部彩夏)
- Birthdate: August 31, 1990
- Birthplace: Tokyo, Japan
- Height: 160cm
-  K.B.S.Project "LOA Awaseru Kagami"
-  Sokuchou Ojisan ~Judy Monogatari~
-  Ganryuujima de Matteru ne
-  Kono Sakuhin wa Fiction de Ari, Jitsuzai Suru Jinbutsu, Dantai-tou to wa Issai Kankei Arimasen
-  AKIRA