
Quick answer — Manabu Akita worked on Black Lagoon: The Second Barrage (Key Animation), Detroit Metal City (Key Animation), Kakegurui xx (Character Design) and 6 more anime.
Manabu Akita worked on Black Lagoon: The Second Barrage (Key Animation), Detroit Metal City (Key Animation), Kakegurui xx (Character Design), Kakegurui (Character Design), The God of High School (Character Design), Kaze no Stigma (Key Animation), Good Luck! Ninomiya-kun (Key Animation), Girls Bravo (2nd Key Animation) and 1 more.