Aya Hisakawa (久川 綾 Hisakawa Aya), born November 12, 1968, is the Japanese voice actor of Nyamo in the Azumanga Daiohanime. She is from Kaizuka, Osaka. Aside from being a voice actress, she is a J-pop singer and has released many solo CDs. She has also done voice work in video games such as Soulcalibur. She is best-known for voicing Sailor Mercury from Sailor Moon and Cerberus from Cardcaptor Sakura. She is affiliated with Aoni Production, and for some of her roles, she gets to speak in her native Kansai dialect. Other roles of hers include Dragon Ball Z, Moomin, Magic Knight Rayearth, Revolutionary Girl Utena, Fruits Basket as Yuki Sohma, Love Hina, Kaleido Star, Bleach, Ah! My Goddess, Tsubasa: RESERVoir CHRoNiCLE, One Piece and Detective Conan. Her blood type is A, and she likes games.