Quick answer — Keita Nagahara worked on Takopi's Original Sin (Character Design), Suzume (Prop Design), High Speed! -Free! Starting Days- (Key Animation) and 2 more anime.
Keita Nagahara worked on Takopi's Original Sin (Character Design), Suzume (Prop Design), High Speed! -Free! Starting Days- (Key Animation), Free! -Eternal Summer-: Forbidden All-Hard! (Key Animation), Assault Lily BOUQUET (Assistant Director).
