Kazuhisa Oono, originally from Kouichi Prefecture, started out as a radio mixer but aspired to become an anime director after being inspired by Mirai Keisatsu Urashiman. In 1992, he joined Tatsunoko Production and worked under the direction of Kouichi Mashimo as an assistant before going freelance. He also operates under the pseudonyms Kentaro Nakamura and Kenichi Kuhara.