Sakkai Eightraid
English title: The Exciting Eight
Japanese title: 刹界エイトレイド
Type: ONA
Source: Original
Episodes: 1
Status: Finished Airing
Aired: Feb 2, 2019
Duration: Unknown
Studios: CUCURI, Digital Network Animation
Producers: Bandai Namco Entertainment
Genres: Action, Fantasy

The story takes place in a universe where countless parallel universes known exist. There is always a link — called "Prism" — connecting the modern world and these parallel worlds, and sometimes energy and substance comes through. One day, monsters known as "Eight" come from a parallel world and begin attacking. Humanity begins its counterattack using a power called "Skuld," which harnesses the power of tomorrow. The government gathers Skuld users into an army known as "Norn," but the Eight still wreak destruction over the years. Then, a boy named Asuma who can use an ancient weapon is discovered. 

(Source: ANN)