Naoki Hisaya debuted as the main scenario writer for the adult visual novel developer Tactics under Nexton in 1997.
After One's completion, Hisaya and much of the staff who made both Moon and One, including Jun Maeda, Itaru Hinoue, Shinji Orito, and OdiakeS, left Tactics to work under the video game publishing company VisualArt's where they formed the company Key.
Afterwards, Hisaya formed the dōjin circle Cork Board and participated at Comiket and C Revo, another comic convention, between 1999 and 2002.
In 2004, Hisaya started working for the video game company Siesta where he contributed as a sub-writer for their first title Moon Childe released in December 2005.
In 2012, Hisaya began collaborating with illustrator Mel Kishida to produce the novel-based project Sakura Kagura.