In Black Clover, both Yuno and Asta are the main characters as the series primarily focuses on the life story of two but Asta is generally considered the primary protagonist. Asta is a determined and hardworking boy who was born without any magical power in a world where magic is everything. Despite this, he dreams to become the Wizard King who is considered the highest magical authority of the kingdom.
Yuno on the other hand is Asta’s childhood friend and rival. Yuno is naturally gifted with powerful wind magic and shares the same dream of becoming the Wizard King. Their journeys are deeply intertwined, with each pushing the other to become stronger.
While both the characters play crucial roles in the story, Asta’s underdog story is central to the narrative that actually makes him the main focus of Black Clover.
Also Read - Who Is Asta’s Father in Black Clover?