- Name: Okamoto Ayaka (岡本彩夏)
- Nickname: Aaaya (あーーや)
- Birthdate: August 12, 2002
- Birthplace: Tokyo, Japan
- Blood Type: A
- Height: 163cm
- Hobbies: Idol appreciation, bangs research, singing songs
- Specialties: Finding the strengths of people
- Bands / Groups:
SKE48 Song Participation
|Souyuutoko Aru yo ne?||Koi no Konkyo||Highway Girls|
|Koiochi Flag||Koiochi Flag|
|Ano Koro no Kimi wo Mitsuketa||Ame Nochi Kisekiteki ni Hare||Plymouth Terra|
|Kokoro ni Flower||Janai Romantic|
|Densen wa Kiete mo||Prima Stella|
- She had her official debut as a ninth generation Kenkyuusei member on December 31, 2018 at the SKE48 theater. She was promoted to SKE48 Team KII on February 15, 2020.
- Her favorite colors are black and pink.
- Her future dream is to become center.
- Her favorite foods are chocolate mint, beef tongue, horumon, pig legs, and strawberry sandwiches.
- Her favorite word is "toutoi" (尊い).
- Her message is "I will do my best to be an idol that you can think you are glad to think about." (自分が大好きなアイドルのように推してて良かったと思ってもらえるようなアイドルになれるように頑張ります)