The manga adaptation of the fantasy light novels (also from Seven Seas) about modern dungeon diving done quick--illustrated by the creator of Venus Versus Virus!
It has been twenty years since dungeons began appearing all across the world, an incident that coincided with humanity receiving supernatural abilities--all of which turned everyday life into an adventure. When Amane Rin awakens to a unique skill called "Dungeon Teleporting," the rules can't touch him anymore. This is the tale of how he races to become the world's strongest (and fastest-progressing) adventurer!