Quick answer — Shinpei Nagai worked on Dead Mount Death Play Part 2 (Storyboard), DEMON LORD 2099 (Storyboard), I Can't Understand What My Husband is Saying 2nd Thread (Director) and 19 more anime.
Shinpei Nagai worked on Dead Mount Death Play Part 2 (Storyboard), DEMON LORD 2099 (Storyboard), I Can't Understand What My Husband is Saying 2nd Thread (Director), I Can't Understand What My Husband Is Saying (Director), Level 1 Demon Lord and One Room Hero (Storyboard), The Do-Over Damsel Conquers the Dragon Emperor (Storyboard), Dropkick on My Devil! (Episode Director), Hiiro no Kakera: The Tamayori Princess Saga 2 (Episode Director) and 14 more.