Joseph Luster
February 18, 2023 
Anyone looking forward to checking out the Black Clover: Sword of the Wizard King anime film—which is set for a simultaneous premiere in Japanese theaters and on Netflix around the world—will have to wait a bit longer. The film was previously announced for a March 31 premiere, but those plans have shifted and the big screen outing has been postponed to June 16.
As has been the case a lot lately, the reason is due to the impact COVID-19 has had on production.
【公開延期のお知らせ】
3.31(金)に全国ロードショー
そしてNetflix全世界配信を予定しておりました
映画『#ブラッククローバー 魔法帝の剣』につきまして
公開を6.16(金)に延期させて頂くこととなりました。https://t.co/KHDIjbq29s— ブラッククローバー_映画公式／6.16(金)日本全国ロードショー&Netflix全世界配信 (@bclover_PR) February 17, 2023
Crunchyroll currently streams the entire Black Clover TV anime and describes the story:
In a world where magic is everything, Asta and Yuno are both found abandoned at a church on the same day. While Yuno is gifted with exceptional magical powers, Asta is the only one in this world without any. At the age of fifteen, both receive grimoires, magic books that amplify their holder’s magic. Asta’s is a rare Grimoire of Anti-Magic that negates and repels his opponent’s spells. Being opposite but good rivals, Yuno and Asta are ready for the hardest of challenges to achieve their common dream: to be the Wizard King. Giving up is never an option!
Source: Official Twitter
