Synopsis

The Primordial Core’s an unconquerable dungeon, the lair of the most powerful monster ever to exist, the Original Monster, the incarnation of evil—Swallow... who happens to be a lazy boss monster who just wants to sleep. Taking care of this lazy bum is Renee, a homunculus maid whose obsession with Swallow knows no bounds.

At this point, the only one keeping the dungeon running is Patrick, the last brain cell of the bunch—and he’s a skeleton! Will Mr. Swallow get any rest amid all this chaos?

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  1. r4 source · import Imported from MangaUpdates +1 field 4 weeks ago
  2. r3 source · import Imported from AniList +1 field 4 weeks ago
  3. r2 source · import Imported from AniList +1 field Oct 2026

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