Ayaka Nishiwaki

Birthday: February 15th, 1989 Place of Birth: Hiroshima, Hiroshima Prefecture, Japan

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.