Ayaka Nishiwaki (西脇 綾香, Nishiwaki Ayaka), nicknamed A~chan (あ～ちゃん, stylized as a-chan), is a Japanese singer and dancer. She is known as one of the members of the Japanese electropop group Perfume.
![Perfume LIVE 2021 [polygon wave]](https://image.tmdb.org/t/p/w500/wD2NKE3aHfAzT8kDPHzA2MMB0Jx.jpg)
