Ayaka Nishiwaki

출생 1989년 2월 15일 · Hiroshima, Hiroshima, 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.