Awakened within doomsday apartments, students discover extraordinary abilities necessary for survival. Jiang Ye and his classmates find themselves confined to the same beginner's domain, where power hierarchies instantly solidify. His peers showcase their awakening immediately: one celebrates an S-tier ability, another promises salvation, and classmates eagerly propose mutual support and cooperation. The strongest among them naturally assumes leadership. Jiang Ye's awakening grants an X-tier ability—Infinite Replication—theoretically superior to all others. His first replica manifests only C-tier strength, leaving him remarkably unremarkable among his group. The contrast proves humbling. What unfolds next shatters expectations: each replica he creates emerges with its own distinct ability. When merged back into his original form, Jiang Ye absorbs their powers entirely. X-tier Infinite Replication transforms into something revolutionary—infinite abilities stacked within a single body through strategic duplication. Horror permeates the apartments beyond standard monster encounters and leveling progression. Supernatural entities haunt the apartments—genuinely terrifying beings specializing in human impersonation. When these creatures assume Jiang Ye's appearance, his X-tier ability automatically identifies them as replicas, drawing them under his control. While classmates methodically battle through standard progression, Jiang Ye pursues an entirely different strategy: harvesting supernatural horrors into an expanding army of controlled entities. Standing before his mirror, Jiang Ye meets his reflection's eerie grin. He mirrors that unsettling smile knowingly. "Welcome, new replica."