Originating as a celebrated South Korean web novel before expanding into a widely read manhwa webcomic adaptation, Everyone Else is A Returnee has built a devoted international following among fans of modern progression fantasy, though an official television anime adaptation has not yet been announced. Also recognized by its Korean title Dureun Da Hoewijaja, the narrative opens with a cosmic clerical error of epic proportions. When an angelic oversight leaves the unremarkable college student Yu Il-han behind on Earth for a full millennium while the rest of humanity trains in alternate dimensions to combat impending monster incursions, he spends his solitary centuries mastering every conceivable skill, crafting craft, and martial arts technique in total isolation.

Armed with absurdly maxed-out statistics and supernatural crafts proficiency upon his belated graduation from a thousand years of solitude, Il-han finally confronts the returning human populace alongside two bureaucratic angels dispatched by a remorseful deity. As global defense forces and arrogant returnees struggle to comprehend the sheer scale of his hidden strength, Il-han must navigate escalating planetary threats, monstrous invasions, and the complexities of social integration. The ensuing conflicts showcase brilliant progression mechanics, deadpan humor, and high-stakes action, cementing his trajectory from a forgotten bystander into an absolute powerhouse whose extraordinary exploits redefine the very balance of global survival and divine oversight.