The Last Skill: A Dungeon Cleaner's Collection [LitRPG, Progression] [Weak To OP]

Ethan cleans dungeons and the corpses of fallen heroes. Now he inherits their ultimate skills… and becomes the primary target of every monster inside. Everyone wants to be a Top Ranker, bathing in glory, gold, and recognition. Ethan? He prefers anti-mana disinfectant. As a Sanitation Specialist assigned to The Infinite Maw, the deadliest dungeon in the world, his job is simple: enter after the adventurers are done fighting, clean up the aftermath before the dungeon destabilizes, and never—ever—touch anything that’s still warm. Then he activates [The Cleaner’s Ledger]. A hidden system that allows him to harvest “Residual Regret.” He can witness the last ten seconds of the dead and claim the ultimate skill they failed to use. But the deaths inside this dungeon aren’t random. Someone—or something—is shepherding adventurers toward carefully engineered slaughter. And now that “someone” has begun to suspect there’s a ghost scavenging the spoils. Because inside a dungeon, reputation is everything. And no one believes a sanitation worker can kill catastrophe-level monsters with a mop and a broom. What to Expect: [ + ] Weak-to-Strong Progression. From a mocked Grade E cleaner to something that makes the dungeon itself uneasy. [ + ] A Broken LitRPG System. with a Cost Ethan’s system isn’t overpowered by design. It’s malfunctioning. Every power he steals makes him reek more strongly of death—drawing stronger monsters toward him. [ + ] Slow burn [ + ] A 3,000-Year-Old Mimic. He joined because someone finally bothered to dust him. The most loyal—and disturbingly polite—mimic butler in existence. [ + ] A Different Kind of Dungeon Story. He isn’t chasing treasure. He enters after the raid ends, sweeps the remains… and quietly becomes the most dangerous thing inside. [ + ] No Harem. Just a cleaner, his mimic, and the growing scent of death.​ [ + ] Daily releases. 2,500–3,000 words per chapter. 200,000+ words already written. No sudden hiatus.