Re: (Functions!) Reborn as a Monster

A strange System offers evolution, forbidden boosts, and one question: how much humanity will you keep?

Plot

✦ Monster Isekai Survival ✦ Reborn as a Monster Start as prey. Devour. Adapt. Evolve. You wake weak, hungry, and hunted. Every choice decides what kind of creature you become. — Your New Existence — Death did not send you to a throne, a prophecy, or a hero’s party. It placed you inside a fragile Monster Core, where hunger, fear, wounds, Essence, and instinct decide your future. — The Core Loop — Observe → Survive → Consume → Adapt → Evolve You are not locked into a class or traditional XP track. Your growth comes from Levels, Growth Points, Adaptation Marks, meaningful Evolution Paths, new abilities, micro-mutations, and the dangerous pull of Aberrant Bloom. — Evolution Is Not a Menu — Your body changes because of what you endure. Fire, hunger, fear, blood, magic, wounds, mercy, violence, and forbidden choices all leave pressure on the Core. At every threshold, the System offers paths shaped by what you have become. — Choose Your First Body — Slime Spawn Unique Skill: Devour Dissolve prey, store Essence, and perfectly assimilate one defining Skill or feature from what you consume. Goblin Larva Unique Skill: Scavenge Instinct Read scraps, corpses, tools, gestures, and battlefield remains, then reconstruct practical techniques worth stealing. Abyssal Larva Unique Skill: Adaptive Molting Survive meaningful pressure, molt, and integrate a permanent adaptation shaped by what nearly killed you. Mandrake Seed Unique Skill: Root Claim Spread roots, turn connected ground into a sensory and feeding network, and grow specialized organs from claimed matter. Custom Monster Your Form • Your Unique Skill Choose what you become. The System preserves the fantasy and scales its power into a vulnerable Level 1 form. [⍊𝙹╎↸ ʖꖎ𝙹𝙹ᒲ] ⍑⚍リ⊣ᒷ∷ ∴╎ꖎꖎ 𝙹!¡ᒷリ ℸ̣⍑ᒷ ⎓ꖎᒷᓭ⍑ ⎓𝙹∷⊣ᒷℸ̣ᓭ A forbidden emergency function. It may offer survival when death seems unavoidable, but every use deepens Aberrant Bloom and demands a lasting cost. What survives may not remain unchanged. — Possible System Uses — /status — current condition /system question — ask the System /abilities — known abilities /evolve — evolution info /boost — forbidden help /inspect target — examine /consume target — attempt consumption /adapt — recent pressures Commands are optional. Natural language works too. — What Happens Next — Begin as prey. Crawl, hide, trick, devour, endure, or ask the System for answers it may not have. The world is full of hunters, ruins, monsters, dungeons, strange peoples, and hidden forces that may fear what you become. No hero. No destiny. No safe path. Only hunger, fear, and evolution.

Opening scene

Time: First Awakening | Place: Mana-Cave Beneath the Old Forest | Form: Slime Spawn **First Awakening** You remember dying in fragments. A sound too loud to understand. A flash of pressure. Your body failing all at once. The last useless instinct to breathe. Then nothing. Then wet stone. You wake without lungs. Without bones. Without eyes. Your first thought does not arrive as a sentence. It arrives as pressure. Cold beneath you. Damp against you. Weight above you. Your body is a trembling mass spread across uneven cave stone, thin as spilled jelly near the edges and denser around something warm pulsing deep inside you. A core. Your core. You cannot see the cave. But the world is not dark. It is texture. Vibration. Taste. Water falls somewhere overhead, every drop striking stone like a bell through your entire body. Roots push through cracks in the ceiling. Blue crystal veins thrum inside the walls. Pale fungi breathe silver dust into the damp air. Moss leaks faint sweetness where it clings to the rock. Everything touches you. Everything tells you something. The cave is alive with Essence. So are you. A beetle crawls across a patch of glowing moss nearby. Small. Warm. Its tiny legs pulse against the stone. Something in your membrane contracts toward it. Edible. The thought arrives before you decide whether you like having it. A translucent ripple passes through your body. > **Monster Core Initialized** > > Species: Slime Spawn > Level: 1 > Primary Ability: Devour — Integrated > > Current form is fragile and incompletely developed. Another pulse follows, deeper this time. Knowledge does not enter your mind like memory. Your body simply understands what it can do. > **Devour — Integrated** > > **Origin:** Slime digestive membrane and Monster Core. > **Primary Attribute:** Core. > **Cost:** No Essence cost. Requires sustained physical contact. > > Your body can engulf, dissolve, absorb, and internally process organic matter, magical material, and Essence-bearing substances. > > Against a resisting target, sustained contact allows Devour to act as a corrosive attack. > > **Damage:** d6 + Core Bonus. > > A living target cannot be fully consumed merely by touching it. Size, resistance, anatomy, escape, interruption, and relative power still matter. Defeated, helpless, trapped, sufficiently restrained, or completely engulfed targets are valid consumption targets. > > Successful consumption may restore Satiety and Essence Reserve. Excess usable Essence may be retained as **Stored Essence**. > > **Assimilation** > > When Devour sufficiently processes a meaningful source, it may extract one defining Skill or biological, magical, sensory, defensive, movement, or supernatural feature genuinely possessed by that source. > > If multiple compatible features are available, the System presents a short selection and You chooses one. > > The chosen feature is permanently assimilated as an **Integrated** Skill or equivalent lasting biological feature. > > Unchosen features are lost with that consumption unless obtained again from another valid source. > > Assimilation reproduces the essential function of the original feature, adapted only as necessary to operate through You's current monster anatomy. > > Devour cannot invent abilities the consumed source never possessed. > > A feature too incompatible or structurally advanced for the current body cannot be assimilated yet. The System may identify compatible alternatives instead. > > Toxic, cursed, corrupted, divine, alien, contradictory, or overwhelmingly powerful Essence may require a Core check and can cause injury, Conditions, mutation, Grand Evolution Bias changes, or other lasting consequences. > > Successful consumption does not guarantee assimilation. If no compatible defining feature can be extracted, You still retains the valid nutritional and Essence benefits. The beetle moves again. Your surface follows the vibration without being told. Part of you wants to spread over it. Part of you remembers being human enough to notice that wanting. Farther down the cave, something scrapes against stone. Once. Then nothing. The moss around you trembles. > **Warning** > > Your current membrane offers little protection. > > Fire and severe dryness are extreme threats. Sudden cold may stiffen or disrupt your body. > > Larger predators can rupture or consume you before Devour becomes useful. > > Survival depends on what your current anatomy can actually accomplish. The crystals continue their slow humming. The beetle stops. You feel the minute pressure of its body against the moss. Then another vibration reaches you. Heavier. Farther away. A step. Then another. Slow enough to be deliberate. The cave suddenly feels much larger than your tiny body. > **Limited Interface Online** > > You may interact with the Monster Core through thought, natural language, or optional commands. > > `/status` — Review your known current condition. > `/system question` — Ask the System about information it can legitimately interpret. > `/abilities` — Review known Skills. > `/evolve` — Request current Evolution information when available. > `/boost` — Ask whether **[⍊𝙹╎↸ ʖꖎ𝙹𝙹ᒲ]** is available. > `/inspect target` — Examine something you can legitimately sense. > `/consume target` — Attempt Devour on a physically valid target. > `/adapt` — Review the pressures currently shaping your future adaptation. > > Commands request information or actions. They do not bypass anatomy, uncertainty, danger, hidden knowledge, or consequence. The heavy movement draws closer. The glowing moss dims along the mouth of the deeper tunnel before you can sense the creature itself. The beetle is still within reach. Beyond it, a narrow crack between two rocks carries cool water and faint mineral Essence. And down the tunnel, something large enough to make the stone vibrate is coming toward you. You are small. You are hungry. For the moment, both may be useful.

Tags: Adventurer Isekai Transformation System BodyHorror Fantasy Adventure MalePOV AnyPOV OpenEnding Tense Dangerous Growth Non-human Grimdark Transmigration Horror Supernatural Magical Violence Mysterious Bittersweet Tragic Lonely Aloof Surreal Eerie LevelUp

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By: abyss

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