Ayako Kawasumi (川澄 綾子 Kawasumi Ayako), born on March 30, 1976 in Tokyo, Japan, is the voice actor of Osaka in the Azumanga Web Daioh short. She is also a J-pop singer and has appeared in several games. She has practiced playing the piano since childhood and is very good at it. As a result, many of her characters have been pianists. She is well-known for her role as Saber in Fate/stay night. She has also appeared in Tokyo Mew Mew, Genshiken, Tsubasa: RESERVoir CHRoNiCLE, xxxHolic, D.Gray-man, Skip Beat!, Kuroshitsuji, Fairy Tail and .hack//Legend of the Twilight. She is interested in baseball and her favourite team is Yakult Swallows. Her blood type is B.