Asta and Yuno are orphans who were raised together from birth in a church on the outskirts of the Clover Kingdom. In a world where everyone has Magical Power, Asta was born without any. Unlike him, Yuno was born as a prodigy with immense magical power and the talent to control it. The story follows the two foster brothers as they compete to see which one will become the Wizard King, Clover Kingdom's strongest Magic Knight. But How can Asta become a magic knight without magic? But when Asta gains an unknown "Anti-magic" that can destroy all magic, their journey begins; Asta with his rare anti-magic and physical strength, and Yuno with his wind magic and magical prowess.
I intended to use you for my own reasons. You were just a boy who had no magical power and obtained a five-leaf clover grimoire by sheer coincidence… But while I was with you through everything, while I watched you fight your battles, I still didn’t want to try to believe in you… I didn’t want to try and bet on you… But weren’t you going to become magic emperor, Asta? So win - win and become magic emperor! - Secre Swallowtail