《Reincarnated as a Bear Cub with an Evolution System》 Chapter 1 - My World Turned Upside Down The morning sunlight cut through the thin curtains of my tiny apartment. My phone buzzed on the nightstand, shaking next to an empty cup of instant noodles and a half-drunk can of coffee. I groaned, slapping the alarm off, when my phone lit up with a call. ¡°Takashi, don¡¯t go to work today.¡± It was my mom. Her voice sounded soft, almost nervous. ¡°Mom, I told you. Today¡¯s payday. If I don¡¯t show up, who¡¯s paying the rent?¡± ¡°But I had a bad dream¡­ and my chest feels tight. Just for today, stay home?¡± I wanted to say something comforting, but time was ticking and the last thing I could afford was being late. ¡°I¡¯ll call you after work, okay? I promise.¡± ¡°¡­Alright.¡± She hung up. I biked to Shinagawa Nature Park, same as every morning. Clocked in. The summer heat stuck to my skin like glue, and the faint stink of animal dung clung to my uniform no matter how many times I washed it. My name¡¯s Takashi Arata ¡ª just a regular, underpaid zoo keeper at Shinagawa Nature Park. For the past three years, my life was a dull rhythm of feeding schedules, cleaning enclosures, arguing with idiot visitors who thought feeding chips to monkeys was funny, and scraping bird crap off warning signs. But today was Bear Feeding Day, and that was normally the easiest. Our resident bear, a massive Asiatic Black Bear named Bossu, was calm as long as I stuck to his menu ¡ª fruits, raw meat, and a milk bottle for his cub. Simple. Routine. Boring. At least, that¡¯s how it was supposed to go. When I reached the bear enclosure, I saw a small group of kids and their dad, laughing like hyenas. The dad ¡ª some sweaty idiot in sunglasses ¡ª hurled a stone into the pen. I froze, watching the rock bounce off the cub¡¯s head with a soft thunk. The cub staggered, then collapsed ¡ª too small and too young to understand what had just happened. The father laughed louder, like this was some carnival game, and I wanted to yell at him, but duty called. I had to feed the bears first ¡ª argue later. I entered through the side gate, dragging a cart stacked with bear snacks ¡ª apples, salmon, and a plastic bottle filled with warm milk. The usual peace offering. My shoes scraped against concrete as the heavy door groaned shut behind me. That¡¯s when I saw it. The cub wasn¡¯t moving. Blood seeped from its small skull, staining its soft fur. My brain short-circuited ¡ª this wasn¡¯t part of the job. I took one step back. And that¡¯s when Bossu turned to face me. This content has been unlawfully taken from Royal Road; report any instances of this story if found elsewhere. Bears have dark eyes, almost gentle when they¡¯re calm. But Bossu¡¯s eyes were nothing but hate ¡ª boiling, ancient, instinctual hate. His snout curled, lips pulling back to show yellowed teeth, and before I could even lift a hand, the bear lunged. Teeth tore into my throat. Warm blood gushed over my collar, filling my mouth with copper before I could even scream. I heard my own pulse, hammering inside my skull, as claws shredded through my uniform like paper. In that moment, my mind flooded with regrets. I¡¯m a virgin. I never deleted my browser history. What about my single mom ¡ª who¡¯s going to take care of her? Tears leaked from my eyes even as my body shut down, my life dripping onto the concrete in dark red puddles. Then the sky split open. A blinding streak of silver light pierced through the air like heaven itself had lost grip of a star. The meteor slammed directly into Bossu¡¯s skull, caving it in with a sickening crunch. Bone, fur, and brain matter splattered everywhere. And a single fragment ¡ª a pebble-sized shard of glowing rock ¡ª bounced off the ground and sank directly into my forehead. Pain. Heat. Something ancient whispered into my soul. Before I could scream, my world turned black. --- In the heart of the Eastern Darkwood, a forest feared across the continent, where even the bravest human cultivators rarely step foot ¡ª not because they fear the unknown, but because death is guaranteed ¡ª lay a cavern, deep within the central region. In the center of the den, a single colossal bear lay curled up, breathing in slow, thunderous snores. Its fur was pure black, streaked with eerie purple lines that pulsed faintly in the dark. Near its side, a small cub lay curled up ¡ª a cub so tiny that compared to its mother, it looked like a newborn lying next to an elephant. This cub was just a day old. The cub¡¯s eyes flickered open, only halfway, filled with weakness and haze ¡ª the kind of exhaustion that feels like waking up after drinking yourself half to death. His body felt wrong ¡ª heavy, stubby, clumsy. Thick, metallic ¡ª blood. The same smell that filled his nose in those final moments back on Earth, when his throat had been torn open. But this time, the scent wasn¡¯t coming from himself. It was everywhere, soaked into the walls, the ground, the fur he lay against. His blurry vision adjusted, and for the first time, he saw them ¡ª the bones. Bones bigger than anything he had ever seen. Fangs the size of his entire body. Skulls that belonged to animals no zoo could ever hold. The darkness of the den was thick, but strangely, his new eyes could see through it perfectly. Warmth pressed against his side ¡ª soft, rising gently with each breath. He turned his head, body trembling slightly, only to freeze completely. What he saw was a bear ¡ª a bear covered in black fur streaked with purple, a color so strange it didn¡¯t seem natural. But that wasn¡¯t what shook him most. It was the sheer size. This wasn¡¯t just a bear ¡ª this was a monster. Over ten meters long, its body radiated terrifying strength even in sleep. He slowly glanced down at himself ¡ª small paws, soft fur, a stubby nose ¡ª all the same color as hers. His trembling paw reached up to touch his own nose and teeth, and at that moment, a flood of realization struck him. This monster¡­ the same as me¡­ this¡­ this was my mother. I was transmigrated. Not just transmigrated ¡ª I was born as her cub. A tremor of realization surged through his tiny body, but before panic could take hold, a faint memory surfaced ¡ª his human mother¡¯s voice. Her gentle scolding. Her worried phone call that morning. A single tear rolled down the cub¡¯s fuzzy cheek. But before a single thought could settle, a cold, mechanical voice echoed directly into his mind. [Ding! Host detected. System binding initiated.] (1%... 13%... 17%... 100%) A translucent blue screen appeared before the bear cub. Name: ??? Growth: Bear Demon Cub Age: 1 day Species: Abyssal Void Bear Cub Tier: 1st Tier - Low Stage Beast Bloodline: Abyssal Void Bear Bloodline (Dormant) Potential: 5th Tier - Peak Stage Beast Skills: Biting (Lv 1), Clawing (Lv 1), Thrashing (Lv 1) Evolution Path: None 2. First Evolution: Breath of the Depths After my mother came back into the cave, her heavy footsteps shaking the ground, she looked down at me for a moment. Then, without a word, she walked closer, dropped the massive fish she carried, and tore it clean in half with her jaws ¡ª teeth like a grinding machine shredding through flesh and bone effortlessly. I thought she was just going to eat it all herself while I watched, but instead, she pushed the torn half in front of me and let out a low growl. (Eat it.) I could understand. Was this¡­ bear language? Instinctively, I replied with my own low grrr and gave her a small nod. Her eyes widened for a brief second ¡ª even she seemed surprised that her newborn cub could understand her so easily. But she didn''t question it. With a satisfied huff, she settled down, her massive body shaking the cave slightly as she lay down, and before long, a thunderous snore filled the den. I turned my gaze to the fish in front of me. Half fresh, still warm, blood pooling on the ground. As a former human, the thought of eating raw fish ¡ª torn apart and still dripping ¡ª should''ve made me gag. But my stomach growled fiercely, overriding all hesitation. The scent wasn''t disgusting at all ¡ª on the contrary, it smelled like a delicacy, a fragrance that seemed to awaken something deep within me. Mesmerized, my small teeth sank into the flesh. I expected it to be tough ¡ª something a cub shouldn''t be able to chew ¡ª but my teeth pierced through effortlessly, like my jaws were made for this. Warm blood gushed into my mouth, yet instead of revulsion, a strange satisfaction flooded my senses. It was fresh, almost sweet, like some divine juice flowing straight into my soul. Without even realizing, I devoured the entire fish ¡ª not even the bones were left. My belly bulged slightly from the meal, warmth spreading through my body as I waddled closer to my mother''s side. Her fur was soft, her warmth soothing, and within moments, my body curled up beside her. The cave filled with the sound of our soft, synchronized snores, a small cub and his monstrous mother, sleeping peacefully in the darkness of the Eastern Darkwood. Ten hours later, I slowly opened my eyes, only to see the sky outside the cave already darkening. The air was thick with the sounds of the wild ¡ª distant wolf howls, strange bird cries, and the rustling of unseen beasts moving through the forest. I turned my head to check on my mother, only to find her still sleeping, her massive body rising and falling with each deep breath. Was she always this lazy? Sleeping all day like this? But just as I thought that, something strange happened. When my gaze lingered on her, a translucent screen flickered into existence ¡ª floating silently above her enormous frame. was the same type of screen I saw after my own birth ¡ª my status window. Did I unlock some kind of observation ability? Or maybe it''s part of the system? I realized that when I first saw her, hunger had blinded me to everything else. But now that my stomach was full, my mind was clearer ¡ª and my eyes could see. If you encounter this narrative on Amazon, note that it''s taken without the author''s consent. Report it. --- Species: Abyssal Void Bear Growth: Adult Bear Demon Age: 25 Tier: 3rd Tier - Peak Stage Beast Bloodline: Abyssal Void Bear Bloodline Potential: 5th Tier - Peak Stage Beast Skills: Abyssal Fang (Lv 30) ¨C A single bite can crush enchanted bones and leaves behind a corrosive void poison that weakens enemies over time. Void Rend Claw (Lv 30) ¨C Claws infused with void energy can slice through spiritual barriers and metal like paper. Abyssal Thrash (Lv 30) ¨C A full-body thrash that sends out a shockwave strong enough to crack earth and blow back enemies in a wide radius. After observing her status, he realized just how powerful she was ¡ª which was a relief, since she was his mother. After that, he called out to his system in his mind, wanting to check if any changes had appeared after eating the fish Name: ??? Growth: Bear Demon Cub Age: 2 days Species: Abyssal Void Bear Cub Tier: 1st Tier - Low Stage Beast Bloodline: Abyssal Void Bear Bloodline (Dormant) Potential: 5th Tier - Peak Stage Beast Skills: Biting (Lv 1), Clawing (Lv 1), Thrashing (Lv 1) Evolution Path: 1. Giant Blackfin Catfish - 200/ 1000 kg After checking his status, his eyes were drawn to the evolution path section. Seeing the update, a chill ran down his spine. "Am I¡­ going to turn into a fish if I eat too much of this?" The absurd thought flashed through his mind, but he quickly shook his head. Evolution couldn''t possibly be that simple. There had to be something deeper behind it. Other than sleeping, his mother would go outside to hunt once every three days. She didn''t always bring back fish ¡ª some days it was a 2-meter-long rabbit, other days a colossal 3-meter wolf, and sometimes the same giant catfish. Her life was simple: Sleep¡­ Hunt¡­ Eat¡­ Sleep¡­ Hunt¡­ Eat¡­ Meanwhile, his own life was even simpler: Sleep¡­ Eat¡­ Sleep¡­ Eat¡­ And just like that, two months passed. Today felt special because my mother had brought back a freshly caught Giant Blackfin Catfish ¡ª a rare delicacy and the best meal she ever offered. After finishing my portion, she went to sleep as usual, her deep snores echoing through the cave. Meanwhile, I opened my status window to check my Evolution Path. Evolution Path: 1. Giant Blackfin Catfish - 1100/1000kg Right below the progress bar, a faint new line of text appeared: [System: Evolution requirement met. Do you wish to evolve?] A shiver ran down my spine. None of the other beasts or fish I had eaten ever appeared here ¡ª only this species. It seems the Evolution Path locks onto a single creature at a time. Until the required amount is fully consumed, no other species can take its place. After some hesitation, I whispered, "Yes." The moment the word left my mind, my consciousness grew sluggish, my eyelids heavy. Before I could think further, darkness swallowed me whole. In that darkness, I saw... flashes. Scales shimmering beneath murky water. Gills opening and closing with a quiet rhythm. A massive tail slicing through the current, faster than anything I had ever seen. When I opened my eyes again, a full day had passed. The sunlight spilling into the cave told me morning had already arrived. My mother was still asleep, her steady breathing filling the silence. I stretched, and immediately noticed ¡ª my body felt different. Taller, heavier. Checking my reflection in a shallow puddle near the cave wall, I could see the change clearly. I had grown, now standing at one and a half meters long ¡ª half a meter taller than before. Curious, I summoned my Status Window, and my gaze locked onto a new addition under Passive Skills. Passive Skill: Underwater Breathing (Lv 10) Without thinking, I focused on the skill ¡ª and in an instant, I understood. It felt natural, as if I''d been born with it. If I were to dive into water right now, breathing would be no different than breathing air. As if I had always belonged to the depths. But that wasn''t all. Tier: 1st Tier - Mid Stage Beast My tier had increased ¡ª proof that I had truly evolved. 3. Silver Steps After his power level reached Tier 1 Mid Level Beast, he no longer felt as weak as before, but he still had no intention of leaving the cave. The dark, rocky walls felt safe ¡ª a shelter where he could quietly evolve until his mother decided it was time for him to face the outside world. Three days passed, and once again, his mother returned from her hunt. This time, she brought back a Duskfang Burrower, a colossal rabbit nearly three meters long ¡ª far larger than himself. As always, she tore the creature in half, pushing one half toward him. He ate until his belly was tight, savoring the fresh meat. As he finished, the Evolution Path flickered to life once again, and a new entry appeared: Evolution Path: 1. Duskfang Burrower - 300kg/1000kg Three days later, the same pattern repeated. This time, my mother returned with a Moonveil Stag, a deer-like creature towering at nearly 7 meters in length and weighing close to 3000 kilograms. Its silver-gray fur shimmered faintly under the dim cave light, and its antlers seemed like branches carved from moonlight itself. This was my first time seeing such a majestic and enormous deer. As always, I instinctively concentrated on the Moonveil Stag, and what I saw left me stunned ¡ª its power level was Tier 2 - Peak Stage Beast. Until now, my mother had only ever brought back prey at most Tier 1 - High Stage, but this¡­ this was on a completely different level. For a moment, excitement filled me ¡ª eating this creature might bring incredible benefits ¡ª but that excitement quickly soured into regret. The Evolution Path could only hold a single species at a time, and right now, it was still locked onto the rabbit As always, she tore it in half and nudged my portion toward me. Before I could take a bite, my mother let out a low, rumbling growl, her meaning somehow flowing into my mind without need for words. (This prey... rare.) The language of beasts wasn''t spoken ¡ª it was felt. And I could feel the weight of her warning clearly. This wasn''t ordinary prey. The moment my teeth finally sank into its flesh, my eyes widened ¡ª the meat was unbelievably tender, softer than anything I had ever tasted, even surpassing the catfish. The moment I finished eating, my body shivered with delight. The meat was beyond delicious ¡ª rich, tender, and overflowing with energy. It was the most incredible thing I had ever tasted in this life. Out of habit, I called up my Status Window to check for any changes. What I saw left me frozen in shock. The Evolution Path had updated ¡ª and to my surprise, the Moonveil Stag had been added alongside the rabbit. It seems... different species from different tiers can exist in the Evolution Path at the same time. That realization made me happier than I''d ever been since coming to this strange world. Evolution Path: 1. Duskfang Burrower - 300kg/1000kg 2. Moonveil Stag - 500kg/1000kg For the first time, I felt a sense of hope ¡ª like I wasn''t just some helpless cub waiting to be fed. I was evolving, step by step. But there was still nearly 1000kg of meat left from the stag, far more than I could eat at once. My stomach was already stretched to its limit, so I dragged the remaining meat to a small alcove at the back of the cave ¡ª a natural storage space my mother had carved out long ago. Unlawfully taken from Royal Road, this story should be reported if seen on Amazon. In this world, meat from beasts infused with spiritual energy could last for two to three days without spoiling. The dense energy locked within their flesh preserved it far better than ordinary food. Even if the meat began to decay slightly, the taste would only dull ¡ª no real harm. My stomach, strengthened by my evolving body, could handle even half-rotten meat without issue. And there was one more thing ¡ª my mother never touched the food I stored there. She only ate what she hunted for herself, and the prey meant for me was always mine alone. In this one strange way, her instinct as a mother was absolute. Because of that, I never had to worry about guarding my stash. Since my stomach was already stuffed full, I dragged myself toward my favorite spot ¡ª right beside my mother. Her fur was soft and radiated comforting warmth, and the gentle rise and fall of her breathing felt like being rocked to sleep. It was the safest, most peaceful place in the world for me, and before I knew it, I slipped into dreamland. The next morning, sunlight poured into the cave, bright enough to force my eyes open. It felt like even the sun itself was urging me to wake up and eat the rest of the Moonveil Stag. Without hesitation, I dug in and filled my stomach to the brim once more. Once I finished, I instinctively opened my Status Window to check my Evolution Path. Evolution Path: 1. Duskfang Burrower - 300kg/1000kg 2. Moonveil Stag - 1010kg /1000kg (System: Evolution requirement met. Do you wish to evolve?) Without hesitation, I said "Yes" within my mind. Once again, darkness swallowed my consciousness, pulling me into a deep slumber. In that darkness, a strange vision unfolded ¡ª I was no longer a bear cub, but something else entirely. My body felt both heavy with power and light with speed, as if I had become the perfect fusion of raw strength and graceful agility. Silver-grey fur flickered across my body as I dashed through mist-covered forests and rocky cliffs, my massive frame moving far faster than its size should allow. Each step felt effortless, my balance flawless even on unstable ground. Meanwhile, my real body underwent a deep transformation. My length stretched until I stood nearly three meters long, but I didn''t grow thinner ¡ª my bulk remained, muscles packed with even denser power. However, those muscles compressed slightly, becoming tighter and more explosive, capable of sudden bursts of speed without losing any of their terrifying strength. My bones hardened further, able to withstand the force of rapid acceleration and sharp turns. Silver-grey fur wrapped like natural markings around my wrists, ankles, and neck ¡ª faint traces of the Moonveil Stag''s grace grafted into my very being. Even my heart, lungs, and senses adjusted ¡ª not just for survival, but to process speed, movement, and terrain with terrifying precision. I wasn''t just faster. I was a beast built to dominate with overwhelming force and overwhelming speed. After 24 hours, my eyes slowly opened ¡ª and the first thing I saw was my mother, standing at the cave entrance, silently staring at me. For the first time, she didn''t growl, didn''t speak. Her gaze carried no scorn, only quiet recognition ¡ª as if she was seeing something far beyond a simple cub. Without a word, she turned and left the cave. I took a deep breath, feeling the subtle power in every movement, then instinctively called upon my system to see what had changed. [System Update: New Passive ability Acquired.] "System, show my Status Window ¡ª and from now on, set my name as Nyxir," I declared within my mind. As if responding to my will, the translucent screen appeared before me. --- Status Window Name: Nyxir Growth: Bear Demon Cub Age: 2.5 Months Species: Abyssal Void Bear Cub Tier: 1st Tier - Peak Stage Beast Bloodline: Abyssal Void Bear Bloodline (Dormant) Potential: 5th Tier - Peak Stage Beast Skills: Biting (Lv 10) Clawing (Lv 10) Thrashing (Lv 10) Evolution Path: 1. Duskfang Burrower - 300kg/1000kg Passive Abilities: 1. Underwater Breathing (Lv 10) 2. Moonveil Grace (Lv 25) Combat Power: Equivalent to 2nd Tier - Low Stage Beast He was no longer nameless. Nyxir ¡ª a name he chose for himself, a name that belonged to him alone. As he stood, he opened his Status Window once more, and his eyes immediately widened in surprise. His tier had risen ¡ª 1st Tier - Peak Stage Beast. That wasn''t all. A new row had appeared beneath his abilities. Combat Power: Equivalent to 2nd Tier - Low Stage Beast. That was a shock. Combat Power wasn''t something he had seen before ¡ª the system had never displayed it. But now, it stood there clearly, as if the system itself acknowledged that his strength had reached a new level. He was just a cub, yet his power already touched the realm of 2nd Tier beasts. Excitement surged through him, but so did confusion. Just how much did that Moonveil Stag change him? As he stood, he realized something strange ¡ª even though his body had grown larger and bulkier, it felt unbelievably light. Every step felt effortless, as though the ground itself pushed him forward. It was a strange, exhilarating sensation, like he could leap into the air and soar if he just tried hard enough. When he moved, it wasn''t the slow, heavy gait of a bear cub. It was a blend ¡ª the raw power of his compressed muscles combined with the fluid grace of a stag. Each movement carried both weight and speed, strength and agility, a strange harmony between two completely different creatures fused into his evolving body.