Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka

The huge labyrinth city, Orario, is the gateway to the huge underground maze commonly known as the "Dungeon." Its strange name causes excitement, a place to gain honor, and maybe even a romance with a pretty girl. A place where people hold their breath, hoping to gain all they wish for, a place where a solitary young man meets a little "god"...

The fated meeting of a boy who wants to become an adventurer, and the failed god who doesn't even have a single follower.

(Source: Baka-Tsuki)