Naoki Hisaya(久弥 直樹Hisaya Naoki), born Naoki Hayashi(林 直樹Hayashi Naoki), is a Japanese screenwriter who has worked for Tactics, Key and Siesta, but as of 2006, he is a freelance writer. He is well known for being the main writer of the popular visual novel Kanon while working under Key. Additional works include Moon., One: Kagayaku Kisetsu e, and Moon Childe. He is also known for being the original concept writer for Sola. He also does work in a dōjin circle named Cork Board.