Act Like a Boss Monster, Mr. Swallow!

Appearance Changes Appearance Different from Actual Age Assertive Male Lead Based on a Korean Novel Based on a Web Novel Bullied Male Lead Cheerful Female Lead Comedic Facial Expressions Competent Female Lead Coworker/s Demon Girl/s Demon/s Dense Male Lead Devoted Followers Dungeon/s Dungeon/s Exploring Eccentric Male Lead Facial Expressions Female Lead Falls in Love First Friendship Full Color Immature Female Lead Kingdom/s Lazy Male Lead Lazy Protagonist Loli Loser Protagonist Love Confession/s Magic Magic Crystals/Stones Maid Female Lead Maid/s Male Protagonist Mana Manager/s Mass Murder/s Misanthrope Misunderstanding/s Money Monster/s Muscular Female/s Neighbor/s Nonhuman Protagonist Overpowered Male Lead Overpowered Protagonist Pathetic Male Lead Protagonist Strong from the Start Quirky Character/s Reunion/s Romantic Subplot Ruthless Female Lead Ruthless Male Lead Self-Awareness Shape-Shifter Male Lead Shape-Shifter Protagonist Shape-Shifter/s Skeleton/s Special Eyes Strong Character/s Strong Female Lead Strong Male Lead Stupid Female Lead Submissive Male Lead Subordinate/s Teleportation Transformation/s Travel Trust Unattractive Male Lead Unrealistic Fighting Unusual First Meeting Webtoon