Quick answer — Nobuhiro Arai worked on Bungo Stray Dogs 5 (Character Design), Bungo Stray Dogs 4 (Character Design), Bungo Stray Dogs 2 (Character Design) and 9 more anime.
Nobuhiro Arai worked on Bungo Stray Dogs 5 (Character Design), Bungo Stray Dogs 4 (Character Design), Bungo Stray Dogs 2 (Character Design), Bungo Stray Dogs 3 (Character Design), Bungo Stray Dogs: DEAD APPLE (Character Design), Daemons of the Shadow Realm (Character Design), Bungo Stray Dogs (Character Design), Bungo Stray Dogs 2: Walking Alone (Character Design) and 4 more.