Quick answer — Hiroyuki Ookaji worked on Detective Conan: Countdown to Heaven (In-Between Animation), Fire Force Season 2 (Design Works), Darker than Black: Origins (Key Animation) and 10 more anime.
Hiroyuki Ookaji worked on Detective Conan: Countdown to Heaven (In-Between Animation), Fire Force Season 2 (Design Works), Darker than Black: Origins (Key Animation), Fire Force (Main Animator), Magical Girl Lyrical Nanoha: The Movie 1st (Key Animation), Undead Unluck (Main Animator), Kino no Tabi: the Beautiful World - Byouki no Kuni: For You (Key Animation), Giant Killing (Key Animation) and 5 more.