Dragon Quest X: Boukensha-tachi no Kiseki
Japanese title: ドラゴンクエストX　冒険者たちのきせき
Alternative titles: Dragon Quest X: The Miracles of the Adventurers
Type: ONA
Source: Original
Episodes: 2
Status: Finished Airing
Aired: Aug 7, 2017 to Dec 10, 2017
Duration: 6 min per ep
Rating: G - All Ages
Producers: Square Enix
Genres: Slice of Life
Themes: Strategy Game

The anime celebrates the Dragon Quest X online game's fifth anniversary by animating player-submitted "miraculous stories" related to the game. 

(Source: ANN)