보스 몹답게 행동하세요, 스왈로우 씨! | Act Like a Boss Monster, Mr. Swallow! | The Unbeatable Dungeon's Lazy Boss Monster | Boss Mopdapge Haengdonghaseyo, Swallow-ssi!
Deep at the bottom of the Primordial Core, the world's most terrifying and unconquerable dungeon, slumbers the legendary Original Monster and supreme calamity of the world: Swallow. Songs and prophecies describe him as an extinction-level demon of endless hunger and wrath. In reality, Swallow is a hopelessly lazy bum who simply wants to take uninterrupted 100-year naps.
Managing the apocalyptic dungeon falls upon his long-suffering subordinates: Renee, an unhealthily devoted homunculus maid who pampers him relentlessly, and Patrick, an overworked skeleton retainer who is the only creature with functioning brain cells in the abyss. Between intrusive human hero raid parties, ambitious demon lords picking fights, and his retainers nagging him to do his job, the universe's ultimate apex predator just wants everyone to leave him alone.