Quick answer — Hisashi Saitou worked on Planetes (Design Assistance), Bamboo Blade (Director), InuYasha the Movie 4: Fire on the Mystic Island (Animation Director) and 19 more anime.
Hisashi Saitou worked on Planetes (Design Assistance), Bamboo Blade (Director), InuYasha the Movie 4: Fire on the Mystic Island (Animation Director), Heaven's Lost Property the Movie: The Angeloid of Clockwork (Chief Director), Heaven's Lost Property: Forte (Director), Heaven's Lost Property OVA (Director), Haganai (Director), Heaven's Lost Property (Director) and 14 more.