Image source is What Happens Inside the Dungeon.
It's fantastic. Starts off rough, but the art, plot, and characters quickly develop into some the most fun comedic/serius stuff I've read.
NSFW warning, sex and sex jokes are frequent.
As an example, in-universe the most powerful metal is a mineral called virginium, because it can only be touched by virgins, hence making people who can work with it extremely rare, since promiscous lunacy is basically the norm.