Billiam's F-ranked Gift enables him to show himself, and others, the way. He uses his Gift to get himself out of the trouble that his mouth gets him into as he romps, glomps and stomps his way through portals, dungeons and other fantasy tropes. He helps the Adventurer's Guild establish an outpost on a new frontier (because, well, of course he does) right before getting kicked in the teeth by an apocalypse of demonic proportions.