Act Like a Boss Monster, Mr. Swallow!
Boss Mopdapge Haengdonghaseyo, Swallow Ssi!
71 / 100 on AniList 7.21 / 10 on MyAnimeList
Action ยท Fantasy
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.… Synopsis via AniList
Ask Tsundoku about it Manga like Act Like a Boss Monster, Mr. Swallow!