Sayaka

Sayaka Yamamoto (山本 彩) is a singer and songwriter, born in 1993, not to be confused with Sayaka Yamamoto of the Dream group.
Her name is spelled with the kanji commonly pronounced as Aya.

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https://en.wikipedia.org/wiki/Sayaka_Yamamoto

Sayaka Akimoto (秋元 才加, Akimoto Sayaka) is a Japanese actress and singer. She was a member of Japanese idol girl group AKB48 and its spin-off unit Diva. She is of Japanese and Filipino descent.

Sayaka Igarashi from the anime series "Kakegurui".

I have two characters from works of fiction to mention.

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1. Sayaka Miki from Puella Magi Madoka Magica

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2. Sayaka Maizono from Danganronpa: Trigger Happy Havoc.

Sayaka Ichii is a Japanese pop singer and former member for Japanese girl group Morning Musume. Joined the girl group Morning Musume in 1998. She, along with Mari Yaguchi and Kei Yasuda, formed the second generation of members. While in Morning Musume, Sayaka Ichii was put into the spin-off group, Petitmoni with Maki Goto and Kei Yasuda. Ichii was also part of the Hello Project! Summer Shuffles 2000 group Aoiro 7. She also recorded a folk song album with Yuko Nakazawa. She left Morning Musume in May to continue her education.

Sayaka Sasaki is a Japanese musician from Akita Prefecture signed to Lantis. She started her music career after winning the All-Japan Anison Grand Prix singing contest in 2009. Since then, Sakaki has performed theme songs for various anime television series, such as The Book of Bantorra, Nichijou, Garo: The Animation, So, I Can't Play H!, and Bakuon!, among others.

Sayaka Ohara is a Japanese voice actress. Affiliated with Haikyō. Her major roles include Hiroko in Space Pirate Mito, Layla Hamilton in Kaleido Star, Yuko Ichihara in xxxHolic and Tsubasa Reservoir Chronicle, Alicia Florence in Aria, Beatrice in Umineko no Naku Koro ni, Milly Ashford in Code Geass, Erza Scarlet in Fairy Tail, Irisviel in the Fate/Zero and Fate/kaleid liner Prisma Illya series and the initial voice of Gammisers in episode 27-34 of Kamen Rider Ghost. She has also voiced in a variety of video games and live-action overseas dubs, and hosts a number of radio shows, many of which are related to her voice projects. In 2013, she received a Best Supporting Actress award at the 7th Seiyu Awards.

Sayaka Takahashi is a Japanese female badminton player who is single specialist. Takahashi is the younger sister of Ayaka Takahashi who is a badminton doubles player.

Sayaka Aoki is a Japanese voice actress and is affiliated with Bell Production management. She is originally from Akita Prefecture. She sometimes uses Shizuka Aoki (青木 静香 Aoki Shizuka) for stage performances.

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She has a very high voice and generally performs characters such as the title role in Coji-Coji, but is well known for her portrayals of Lolita-style characters and heroines featured in Bishōjo games and in anime video games.

Sayaka Kanda is a Japanese actress and singer. She is the only child of pop singer actor Masaki Kanda and Seiko Matsuda.