Watch Black Clover: Mahou Tei no Ken Online

The special episode features the captains of the different squads plus Asta and Yuno participating in a quiz show.

Asta is a young boy who dreams of becoming the greatest mage in the kingdom. He only has one problem, he can't use magic. Luckily for Asta, he receives the incredibly rare five-leaf clover grimoire that gives him the power of anti-magic. Even though he can't use magic, he plans to become the Wizard King.

Asta and Yuno were abandoned together at the same church and have been inseparable since. As children, they promised that they would compete against each other to see who would become the next Emperor Magus. However, as they grew up, some differences between them became plain. Yuno was a genius with magic, with amazing power and control, while Asta could not use magic at all, and tried to make up for his lack by training physically. When they received their Grimoires at age 15, Yuno got a spectacular book with a four-leaf clover (most people receive a three-leaf-clover), while Asta received nothing at all. However, when Yuno was threatened, the truth about Asta's power was revealed, he received a five-leaf clover Grimoire, a "black clover"! Now the two friends are heading out in the world, both seeking the same goal!

An OVA episode bundled with the 11th manga volume.