It is considered an Alternate Universe story that does not fit into the main timeline.
(also known as Squishy! Black Clover ) is an 8-episode ONA (Original Net Animation) series featuring "chibi" versions of the characters in an alternate universe. Episode 7: "The Royal Knight Selection Exam" Mugyutto! Black Clover Episode 7
This episode parodies the "Royal Knights Selection Exam" arc from the main series. Instead of the high-stakes magic battles seen in the original show, the characters participate in a "squishy" version of the exam. It is considered an Alternate Universe story that