Quick answer — Carlo Zen worked on Saga of Tanya the Evil - the Movie - (Original Story), Saga of Tanya the Evil (Original Story), Isekai Quartet 3 (Original Creator) and 5 more anime.
Carlo Zen worked on Saga of Tanya the Evil - the Movie - (Original Story), Saga of Tanya the Evil (Original Story), Isekai Quartet 3 (Original Creator), Saga of Tanya the Evil: Operation Desert Pasta (Original Creator), Isekai Quartet The Movie: Another World (Original Creator), Isekai Quartet (Original Creator), Isekai Quartet 2 (Original Creator), Saga of Tanya the Evil Season 2 (Original Story).
