Yami Sukehiro, the captain of Asta's knight order, the Black Bulls, suddenly grows younger, just as a mysterious mage launches an attack on the Clover Kingdom. Join Asta and his friends as they embark on a new adventure of trials and tribulations. Black Clover Gaiden: Quartet Knights is based on the Black Clover: Quartet Knights video game for Playstation 4 and PC. (Source: Bandai Namco Entertainment)