Kawasumi Ayako was born March 30, 1976 in Tokyo, Japan. She is a voice actress (seiyuu), narrator and J-pop singer working for Office Osawa.
Kawasumi is a skilled pianist, having practiced the piano since she was three years old and later graduating from Toho Junior College of Music.
In 1996 she won at a SME audition and got a scholarship for Yoyogi Animation Gakuin, where she trained as voice actor. She made her debut as a side character in an episode of Taiho Shichauzo and had her first major role as Mogi Natsuki in Initial D but it was her role as Kamigishi Akari in the To Heart game adaption, that gained recognition amongst anime fans.
She is affectionately referred to by her fellow seiyuu and fans as "Ayachii (あやちー)", "Peyaya (ぺやや)", "Ayasumi (あやすみ)" and "Aya-nee (あやねえ)". Her skill as pianist is most noticeable in that she composed and performed "...To You", the opening theme to Piano, and played pianists in the anime Piano and Nodame Cantabile.