
Quick answer — Rena Okuyama worked on Kobato (2nd Key Animation), The Royal Tutor (Character Design), The Royal Tutor Movie (Character Design) and 8 more anime.
Rena Okuyama worked on Kobato (2nd Key Animation), The Royal Tutor (Character Design), The Royal Tutor Movie (Character Design), Afro Samurai (In-Between Animation), GOOD NIGHT WORLD (Character Design), Mushibugyo (Animation Director), Kamisama Dolls (Key Animation), Orenchi no Furo Jijo (Key Animation) and 3 more.