Black clover, a popular cartoon serialized on Weekly teenager Jump (JI), has sold more than 17 million copies and will now make its movie debut. The film, called "Black clover: the Sword of the Magic Emperor," will be released worldwide on Netflix on March 31, 2023. The film tells original stories that have not yet been depicted in comics. The film, which will be supervised by the original comic book author Yuki Tian, tells the story of the Magic Emperor, which is not revealed in the original work. In a world where magic dominates everything, Ashtar, a boy born without magic, is determined to become a "magic emperor" to overcome adversity, prove his strength, and keep his promise with his friends.