Cold rain mixed with engine oil dripped from a rusted fire escape overhead, striking the pavement with a rhythmic, hollow tap. This was definitely not their home. Ozone and wet garbage filled the air, thick and humid, carrying the scent of ancient earth and decaying concrete. Riley Ross stood in the center of the narrow alleyway, his clothes torn from the violent spatial blast that had ripped him away from his own universe. His mind remained perfectly calm. He didn't panic, didn't curse, and didn't lament his sudden banishment. Instead, his thoughts drifted to King. King, the tyrannical alter-ego of his own father, had thrown him into the multiversal rift, believing it would be his end. It was a betrayal that would have broken a lesser man. For Riley, it was simply a calculation that had resolved with absolute clarity: absolute dominance was the only true safety. Beside him, the two girls stood in stark contrast to his silent, motionless figure. Hannah was tense, her eyes darting to every shadow, her analytical mind working overtime to calculate their chances of survival in this alien environment. Nannah, her chaotic alternate self, was practically vibrating with excitement, her boots splashing in the oily puddles as she spun around. "Where are we? Where are we? It smells like rotting garbage and adventure!" Nannah chirped, her voice slicing through the gloom. "Shut up, Nannah," Hannah hissed, keeping her voice low. "We don't know what's out there. The energy signatures here are completely off the charts. It's nothing like the power grids back home." Riley ignored their bickering. His focus was entirely on the creature that had emerged from the darkness of the intersecting alley. Grotesque and massive, the beast resembled a starved, multi-limbed wolf, but its skin was a translucent, pale membrane that showed the pulsing of black veins beneath. Its jaw was unnaturally wide, unhinging like a snake's to reveal rows of jagged, yellow teeth. From its maw, a thick, lime-green fluid dripped, hissing violently the moment it touched the stone floor. Stone bubbled and dissolved, leaving deep, smoking pits in the earth. "A magical beast," Riley murmured. He didn't know the terminology of this world yet, but his instincts, honed through countless battles and deaths, recognized the predatory nature of the creature. It wasn't just a wild animal. There was a strange, invisible aura clinging to its skin, a faint shimmer of energy that made the hairs on the back of his neck stand up. An underlying power system, completely foreign to anything in his home world, hummed through the air. His mind, cold and calculating, immediately began to catalog the variables. "It's looking at us like we're dinner," Nannah whispered, her smile widening until it looked almost as grotesque as the beast's. "Let me kill it! Let me tear its ears off!" "No," Riley said. His voice was a flat line, devoid of any human emotion. He stepped forward, his boots clicking against the wet ground. "Riley, wait!" Hannah grabbed his shoulder, her grip tight and desperate. "We don't have any data on this thing. We don't know how fast its venom acts, or if its saliva is airborne. We need to retreat and regroup." "Retreat is for those who can die," Riley replied. He gently but firmly brushed her hand off his shoulder. His absolute immortality was not just a safety net. It was his ultimate laboratory. To conquer this new world, he needed to understand its rules, and the quickest way to understand the rules of a violent universe was to let it try to destroy him. He walked toward the beast. His posture was entirely relaxed, his hands hanging loosely at his sides. To the creature, this was an insult—an insult from a tiny, hairless ape that should have been fleeing in terror. The beast let out a low, vibrating growl that shook the loose bricks in the walls. It tensed its massive hind legs, its yellow eyes locking onto Riley's chest. Suddenly, it reared back. A massive glob of the green, bubbling acid was spat directly at Riley's chest. It was fast, traveling with the speed of a bullet. Riley didn't even attempt to dodge. He stood his ground, watching the incoming projectile with cold, unblinking eyes. The acid struck him dead center. Immediately, the smell of burning flesh filled the alley. The acid was incredibly potent, far stronger than any industrial chemical Riley had encountered in his previous life. It tore through his shirt in a fraction of a second. His skin blackened and curled, peeling away to reveal the red, raw muscle beneath. Then, the muscle dissolved. Riley watched, detached, as his own chest cavity was laid bare, exposing his ribs and the rapid, rhythmic beating of his heart. Corrosive chemicals began to eat at the bone, turning the white calcium into a soft, grey mush. Pain, sharp and blinding, flared through his nervous system, a white-hot agony that would have driven any normal man to scream until his lungs burst. Riley didn't make a sound. He simply stood there, his cold eyes watching his own body liquefy in real-time. Inside his body, his absolute immortality went to work. It was a silent, violent resurrection. Cellular structures at the edge of the wounds didn't just multiply; they mutated. They analyzed the chemical structure of the acid, recognizing the corrosive enzymes and immediately synthesizing a highly alkaline, biological barrier. New muscle tissue, dark red and incredibly dense, shot across his exposed ribs like weaving threads. Bones reconstructed themselves, calcifying into a structure far stronger than steel. Within seconds, the acid was neutralized, sliding off his newly formed, flawless skin like harmless water. Riley exhaled a short breath. He felt different. The adaptation hadn't just healed him; it had permanently altered his physiology. A strange warmth spread through his limbs as his muscles became denser and his bones grew heavier. No longer just a human from his old world, his biology had recognized the baseline lethality of this new universe and adapted his physical parameters to match it. Becoming something native to this one was his first step. Yellow eyes widened on the beast, reflecting a very human expression of sheer disbelief. Slowly, it retreated a step, its claws scraping against the wet brick. "My turn," Riley whispered. He didn't run. Closing the distance in a single, explosive stride, he bypassed the creature's defenses entirely. His movement was so fast that the beast couldn't even raise its claws to defend itself. Riley's hand shot out, his fingers wrapping around the creature's thick, leathery throat. Thrashing wildly, the beast clawed at his arms with its multiple limbs, but Riley didn't even feel the scratches. His grip was like a vice of solid iron. He could feel the strange, invisible energy—the life force—flowing through the creature's neck, trying to reinforce its muscles. "Fascinating," Riley thought. This energy was structured, routed through specific pathways in the body. With a cold, deliberate twist of his wrist, Riley exerted his newly adapted physical strength. *Snap.* A sharp crack echoed as the beast's spine broke clean. Its yellow eyes instantly went dark, and the massive, heavy body collapsed to the wet ground. Nannah burst into hysterical laughter, running forward to kick the dead beast's ribs. "That was amazing! Do it again! Find another one and pop its head off!" Hannah walked up slowly, her face pale. "You're a monster, Riley. You didn't even blink." "Emotion is a liability," Riley replied, looking down at his hands. He clenched and unclenched his fists, feeling the incredible surge of power humming beneath his skin. Physical strength was not enough to survive what lay ahead. He had felt that energy inside the beast. It was a system. If a simple beast could possess it, the humans of this world must have refined it into an art form. He needed to learn it. Finding someone who could teach him was paramount, or better yet, someone powerful enough to temporarily 'kill' him so he could copy their power entirely. "We need to move," Hannah said, looking toward the mouth of the alley. "The noise will attract attention." "Let them come," Riley said. He looked up at the foggy sky, a cold, calculating smile touching his lips. This universe was full of prey. And he was going to hunt them all. --- Fog in the alleyway began to swirl, thickening as a cold breeze swept through the narrow passage. Footsteps sounded in the dark. Rhythmic and precise, they clicked against the wet cobblestones with absolute confidence. Riley didn't turn around immediately. He simply listened, his adapted senses picking up the subtle shifts in the air currents. Out of the gray mist, a figure slowly materialized. Impeccably dressed in a tailored, lavender-colored suit, the tall man looked entirely out of place in this filthy slum. No visible mouth existed on his face, which was perfectly smooth beneath a pair of sharp, intelligent eyes. He held a golden pocket watch delicately between his fingers. A steady, hypnotic ticking came from the watch, commanding the silence of the alley. Slowly, the man began to clap. Sharp echoes bounced off the damp brick walls with every strike of his palms. "To survive a level-three magical beast without Nen... who on earth are you?" the man whispered, his voice smooth, polite, and dripping with dangerous curiosity.

Chapter 2: A Symphony of Rot