The official website of the upcoming anime adaptation of the manga Black Clover revealed a new poster for the anime and revealed the character designs for most of the cast.
New Black Clover Anime Poster/Visual
Julius Nova Chrono, the Magic Emperor
Fuegoleon Vermilion, Captain of the Crimson Lion squad
Nozel Silva, Captain of the Silver Eagle squad
Jack the Ripper, Captain of the Green Mantis squad
Charlotte Roselei, Captain of the Blue Rose squad
William Vangeance, Captain of the Golden Dawn
Crunchyroll has started streaming the first trailer of the anime on September 1st 2017
Author Tabata Yuuki started serialization of his manga Black Clover February 16th 2015. The manga currently has 124 chapters. At Jump Festa, last year December, the announcement of the anime was made. Anime is set to Air on October 3rd, 2017. Studio Pierrot will adapted the series.
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. 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). Where as Asta received nothing at all. But, 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![source]