"Black Clover: Sword of the Wizard King", the first animated feature based on "Black Clover" manga comic, is directed by Ayataka Tanemura and produced by Studio Pierrot, streaming March 31, 2023 on Netflix:
"...'Asta' and his friends are drawn into battle when the former 'Wizard King', 'Conrad Leto', appears holding the 'Emperor's Sword''..."