Chou Yuu Sekai: Being the Reality
English title: World of Super Sand Box: Being the Reality
Japanese title: 超游世界 -BEING THE REALITY-
Alternative titles: Chao You Shijie
Type: ONA
Source: Web manga
Episodes: 20
Status: Finished Airing
Aired: Jan 12, 2017 to Jun 8, 2017
Duration: 13 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Asahi Production, Success Corp.
Producers: Tencent Animation & Comics
Genres: Action, Adventure, Fantasy, Romance
Themes: Video Game

A hot-blooded high school teen, a mysterious female swordsman, and an unpredictable dark emo girl. It's impossible to distinguish between reality and the game world! What kind of conspiracy is awaiting them in this super journey of the world!

(Source: MAL News)