
Quick answer — Hiroyuki Asada worked on Dororo (Original Character Design), Letter Bee Reverse (Original Creator), Letter Bee (Original Creator) and 2 more anime.
Hiroyuki Asada worked on Dororo (Original Character Design), Letter Bee Reverse (Original Creator), Letter Bee (Original Creator), Cheer Boys!! (Original Character Design), The Girl in Twilight (Concept Artist).