
Quick answer — Kouhei Okamura worked on Free! the Final Stroke: The Second Volume (Character Design), Free! the Final Stroke: The First Volume (Character Design), High Speed! -Free! Starting Days- (Animation Director) and 3 more anime.
Kouhei Okamura worked on Free! the Final Stroke: The Second Volume (Character Design), Free! the Final Stroke: The First Volume (Character Design), High Speed! -Free! Starting Days- (Animation Director), Sparks of Tomorrow (Character Design), Miss Kobayashi's Dragon Maid S: Miniature Dragon (Animation Director), Miss Kobayashi's Dragon Maid S: Miniature Dragon EX (Animation Director).