
Quick answer — Ryouichi Ooki worked on Joshiraku OVA (Animation Director), Kiyo in Kyoto: From the Maiko House (Key Animation), Kill Me Baby (Key Animation) and 1 more anime.
Ryouichi Ooki worked on Joshiraku OVA (Animation Director), Kiyo in Kyoto: From the Maiko House (Key Animation), Kill Me Baby (Key Animation), Minami Kamakura High School Girls Cycling Club (Character Design).