Synopsis: Act Like a Boss Monster, Mr. Swallow!

The Primordial Core is an unbeatable dungeon, home to the most formidable monster to ever exist, the Original Monster, the embodiment of evil — Swallow... who just happens to be a slothful boss monster that prefers to nap. Renee, a homunculus maid, is responsible for taking care of this lazy creature, and her obsession with Swallow is limitless. Currently, the only one managing to keep the dungeon operational is Patrick, the last functioning brain cell among them — and he’s a skeleton! Will Mr. Swallow find any peace to rest amidst all this disorder?