“It seems I’ve reached another threshold of existence in this wretched dungeon.” Heikin thought.

  His recently formed arms flexed with newfound strength.

  “There's no time to get ahead of myself, though. I’m still the weakest variable. One swift blow from a larger creature could remove me from this mortal coil.”

  Heikin starts to walk forward. His mind calculating the next steps for the most optimal results.

  His eyes still wandered to the grouping of goblin huts at the cave's edge.

  “Thats my next evolution.” Heikin declares.

  “Others might think what I see as just survival is cruel. But consuming for me is simply resource management.”

  His eyes dim to a colder hue.

  “Emotion complicates outcomes. Math clarifies them.”

  The decision settled quickly—like matter sinking into gel.

  As he walks, his form now that of an indistinguishable goblin from the rest.

  He felt a crunch under his foot. Not the gritty texture he’d gotten used to feeling under his gelatinous form.

  It felt....glassy.

  “What is this.” He thought, moving his foot to the right to expose the object beneath it.

  Heikin picks up the strange rock.

  No.

  This wasn’t rock. But something else more....supernatural.

  “A crystal,” Heikin concluded. testing the crystalline surface in his palm.

  His senses detect it next.

  A warmth seeping through his skin. Like a freshly burnt coal.

  [SYSTEM NOTICE]

  [Elemental ore detected...]

  {Type - Thermal Mana Crystal]

  Heikin’s mind was already racing with potential outcomes.

  “If there was fire....then there had to be other source types.” He concluded.

  Heikin tested a new hypothesis. “If I can absorb plant matter....life forms....then possibly crystals as well. It’s a logical thought pattern.”

  He proceeds with his attempt at absorbing the ore.

  Nothing.

  “Perhaps I’m missing a variable.” Heikin assumed. The slime's mind works with methodical precision.

  He shifted from a goblin's body into a liquid substance once more.

  Now, assuming his familiar amorphous shape.

  He makes another attempt.

  [SYSTEM NOTICE]

  [Elemental ore being consumed by entity...]

  {Type- Thermal Mana Crystals]

  [SYSTEM Observation]

  [Entities' unique physiology allows for passive elemental abilities.]

  [New trait acquired - Elemental Infusion]

  [Active Skill: Imbue slime body with stored elemental traits]

  [Sub attribute attained: Fire Resistance Level - 1]

  [New trait acquired by entity - Mana Core Conversion]

  [Upgrade Skill: Refine absorbed mana stones or elemental ores into cores within your body, allowing permanent trait upgrades.]

  Rather than temporary boosts. Pursuing route gives “Fire Immunity” or “Magic Pulse Absorption.”]

  [SYSTEM NOTICE]

  [Entity has only been able to attain 6% of ores' total mana output.]

  [Recommendation for improvement]

  [Increasing level of unlocked skill Mana Core Conversion will result in improved absorption of mana.]

  Heikin’s body felt warm to the touch as he tested the new flame within.

  “Very useful. This will certainly improve my output.” Heikin reasoned.

  “This path minimizes loss.”

  Heikin morphs back into a goblin.

  Limbs, eyes and ears materializing into place on his humanoid form.

  “To gain an efficient outcome from the goblins.” Heikin contemplated as he started scanning the dungeon more closely now.

  “I need to consume more of these ores. It will increase their instability when I strike.”

  “Power without intent is just waste,” he thought.

  The next few hours pass by in a blink.

  Heikin moves through the dungeon cavern efficiently.

  System notifications appearing with a soft chime when he absorbs a new trait.

  Consuming any crystal he can find methodically.

  He arrives back at the edge of the goblin's village with increased stats.

  A cluster of crude huts and bonfires with dozens of goblins patrolling.

  “I’m functioning at a higher output now. Let's see how much my next evolution yields.” Heikin said internally.

  Now, crouching low to the cave floor as he slowly edged closer. “If this system rewards hunger.”

  He braced a few feet behind one of the guarding hobgoblins at the entrance.

  “Then let's feast.”

  He breaks the goblin's neck in one swift motion. It’s neck vertebrae pop out of place with a snap.

  The action was so sudden, the poor goblin hadn’t even had time to shriek.

  “Let’s move to the next variable. My progress is just a numbers game.”

  And just like that.

  Heikin starts his silent yet efficient slaughter of the goblin tribe.

  A blurry cycle of Input, output, and blood.

  The slime's extermination feels less like slaughter.

  And more arithmetic in nature.

  “Their resistance will only increase processing time.”

  “Others might call what I see survival ‘cruel.’

  “But cruelty implies intent.”

  He snaps the neck of another goblin. Briskly dragging it’s body out of sight.

  “This is logistics.”

  His eyes dimmed—not with malice, but calculation.

  “Emotion introduces variance,” he thought.

  “Variance gets you killed.”

  “Time to test my next hypothesis.”

  For the next goblin. He fills their mouth with his gelatinous substance.

  His body in the form of a goblin, yet his hand remains liquefied down his gullet. Thus drowning them in his digestive essence.

  He works methodically, dragging each body silently to a secluded area while maintaining his disguise.

  He felt no malice involved. Just throughput.

  He isn’t denying morality.

  He’s translating it into a spreadsheet.

  With each precise kill.

  His thoughts became more viscous.

  Smooth....frictionless.

  Moral resistance “dissolved” just like prey.

  One of the goblins noticed a guard missing from their post.

  Panick started to set it.

  “Perfect,” Heikin said. Tone pleased like he's seeing all the pieces come into alignment.

  Unauthorized duplication: this tale has been taken without consent. Report sightings.

  “The chaos factor....it always breaks formation.”

  The remaining goblins start screaming in confusion and fear as they realize their numbers are dwindling.

  Heikin charges into the chaos, revealing his true form and launching an attack on the terrified horde.

  Taking advantage of the chaos. He uses his mana.

  [SYSTEM NOTICE]

  [Using skill - Heat Blast]

  He launches a firebolt straight through the chest of a charging goblin.

  Another is at the gate. Desperately running.

  “No straglers. Loose variables lead to unpredictable outcomes.” Heikin said.

  [Using skill - Static Dominion]

  A lightning strike launches from his hand. Turning the goblin into a smoking corpse.

  Thus, systematically eliminating the remaining goblins.

  Except.

  Heikin looks to his right.

  “I know you’re there.” He says flatly.

  “S-spare us! W-we surrender!” one of them stutters.

  While the other frantically bows.

  The goblins cower and tremble in fear as he approaches.

  “If I wanted you killed. You’d already be dead.” Heikin stated.

  Saying it as if it were an obvious conclusion.

  “In a colony. Even an ant has its uses.” Heikin walks toward them slowly. Each step measured.

  “You can either serve me or die. Pick one. Do you bend the knee? Or lose your head?”

  Heikin points his blade toward their necks. A new trinket picked up after slaying the chieftain.

  “Doesn’t bother me what you pick. I will simply devour you if you would rather die.”

  “Why- why did you attack our village!” The goblin with a torn ear asked, voice cracking.

  The slime just tilts his head.

  “My morality isn’t emotional… but mathematical.”

  “If their lives produced more value as fuel than as variables, the decision is self-evident.”

  They flinch. Unused to such coldness.

  Most goblins died quietly.

  The two survivors lived because they are useful.

  The two unfortunate goblins realized.

  This wasn’t mercy.

  This was cost-benefit analysis.

  He doesn’t spare lives because they matter.

  He spares lives because they might.

  Both goblins drop to their knees instantly, tears streaming down their faces.

  “W-we serve! We serve!” *they wail in unison, completely broken.

  “Good. You two will be my little helpers. My scouts, my bait to lure out other monsters, or help me in combat and sneak attacks if needed.” Heikin says matter-of-factly.

  “Any materials you find, like mana stones and elemental ore, you give to me too. You goblins understand?”

  The terrified goblins nod vigorously, trembling with fear and relief.

  “Y-yes! We understand, master! We’ll gather everything for you!” one of them manages to say through chattering teeth.

  “Collect all the gold, food, or useful weapons and armor.”

  “Make sure to stack the bodies,” Heikin adds.

  “While I….finish my meal.”

  Heikin heads to the secluded spot where he put other goblin bodies and starts absorbing them.

  His new minions frantically gather everything of value from the camp while he enjoys his harvest.

  “Master is so powerful!” they whisper amongst themselves, watching in awe as Heikin expands and absorbs the goblin remains.

  The work was efficient.

  Heikin's two goblin minions dragged bodies by the ankles, tusks clenched tight as they obeyed without question. Armor clattered. Blood smeared the stone.

  They piled the corpses into a rough mound near the cavern wall.

  Heikin regarded it for a moment.

  “Acceptable yield,” he thought.

  He shed the goblin form.

  Bone softened. Muscle unraveled. Structure collapsed inward as his body returned to viscous mass—gelatinous, pale, exposed.

  Consume.

  The heap sank into him.

  Flesh dissolved. Bone cracked. Heat bloomed as mana bled into his core. His mass swelled, senses flooding with fragmented impressions—fear, hunger, submission.

  His system stats grow rapidly as he absorbs the concentrated power of so many goblins.

  Too many inputs at once.

  Processing lagged.

  That was when something moved.

  A hand.

  Not dragged.

  Not limp.

  A goblin—half-crushed, ribs shattered but lungs still working—lurched from inside the pile. One eye gone. One arm useless.

  The other hand held a jagged shard of obsidian.

  It screamed—not in rage.

  In panic.

  The blade plunged deep.

  Straight into Heikin’s core.

  Agony detonated.

  Not pain—disruption.

  His body convulsed, absorption collapsing mid-process. Mass destabilized. Mana leaked violently, heat flashing outward in a burst of uncontrolled energy.

  [SYSTEM ALERT]

  [Structural cohesion compromised.]

  [Absorption interrupted.]

  [Warning: Entity is in transitional state.]

  The goblin stabbed again.

  And again.

  Each strike less effective—but the damage was done.

  Heikin recoiled instinctively, mass surging backward, tearing the goblin apart through sheer reflex.

  The body was absorbed violently, inefficiently—wasteful.

  Silence followed.

  His form quivered.

  Internal systems recalibrated slowly. Pain signals faded. Data settled.

  “…Noted,” Heikin thought.

  A pause.

  Then, colder.

  “Metamorphosis carries risk.”

  The realization crystallized with unsettling clarity.

  Transformation was power.

  But during transformation—

  He was prey.

  “Optimization without safeguards is negligence.”

  His body reformed—denser this time. More cautious.

  Across the cavern, his two minions stood frozen, eyes wide, trembling.

  Heikin looked at the heap.

  At the remains.

  “At scale,” he concluded, “I will need protocols.”

  Not fear.

  Not anger.

  Just procedure.

  And somewhere deep within his core, a new rule quietly wrote itself:

  Never assume the system is finished with you just because the numbers say you’ve won.

  The lesson settled into his mind like doctrine.

  Not guilt. Not revenge. Policy.

  Heikin looked at his stats page after the reformation.

  There were new titles.

  [SYSTEM NOTICE]

  [Entity has unlocked titles and perks based on increased wisdom and intelligence attributes.]

  [SYSTEM observation]

  [Unprecedented levels of intellect seen in slime species.]

  [Subject behaviors....noted.]

  It seems this meager slime is evolving into a predatory, shape-shifting apex being.

  Thriving off cunning, mimicry, and elemental adaptation.

  [Titles unlocked]

  [Predator’s Patience]

  [Entity stalks, waits, and chooses the perfect time to strike.]

  [Biological Assimilation]

  [Every enemy or creature consumed enhances abilities, appearance, and knowledge.]

  “Interesting...There are new variables. These titles could increase my output.” Heikin thought. Eyes scanning the list on screen.

  [SYSTEM NOTICE]

  [Shapeshifting - has reached Level 7]

  [Shapeshifting has evolved to...]

  [Mimicry Mastery]

  [Entity gains the ability to not only mimic appearances, but also replicate vocal patterns, social behaviors, and quirks of any species you’ve absorbed.]

  [SYSTEM NOTICE]

  [tactic: Camouflage has evolved to...]

  [Predator’s Cloak] (Advanced Camouflage)

  [Passive Skill: Blend seamlessly with shadows, surfaces, or even environments thick with mana.]

  [Bonus Effect: Short-term invisibility when motionless.]

  [Consume — Level 10 achieved.]

  [Consume evolving into...]

  [Neural Absorption]

  [Rare Skill: By eating sentient prey (like goblins), you retain fragments of tactical memory and instinct.]

  [Application: Gain basic knowledge of language, locations, and combat formations from victims.]

  Heikin stared at the list for a moment. Mind racing with possible tactical functions.

  “Optimization pathways unlocked upon mass acquisition. Noted.”

  Heikin looked up toward the goblins.

  Both now tense and anxious. “What do you require now, master?” The slightly taller goblin asked. Voice gruff.

  “Now...” Heikin looked ahead.

  Not to the rest of the cavern.

  But to the desolate steps that run through it.

  “If I’m on Floor 12 of this dungeon. Then I suppose the most logical step is to exterminate the core system.”

  The goblin with the torn ear shakes visibly.

  “You don’t mean-” He points toward the staircase. It’s stone steps covered in old dried blood.

  “You aim to defeat Brukor the Hollow?”

  Heikin was already moving.

  His feet stepped forward with purpose and an unsettlingly calculating calm.

  “Defeat?” He muses. A thin smile spread across his lips.

  “No. Eradicate. You will understand soon enough. You’re still early in the process.”

  Heikin could hear thuds against stone up ahead.

  insurmountable doors traced with arcane symbols that glow.

  It’s the only thing keeping whatever monstrosity inside their prison.

  Skulls of-what used to be-adventurers shudder on the floor.

  The bones vibrate with each quake that passes from inside the tomb.

  Yet even still...Heikin looked onward calmly. Readying himself for the battle to come.

  ““If I hesitate, I fail the system. Meaning is created by those who endure.”

  His sword glows red with crimson flame.

  “If I survive long enough, the numbers will justify themselves.”

  No grand moral speech.

  No declaration before the most soul-crushing battle of this slime's short existence.

  Just pragmatism hardening into doctrine.

  Entity Designation: Heikin K. Remington

  Registered Alias: Kurai Hoshi — “Dim Star”

  Species: Slime (Evolving Proto-Organism)

  Classification: Emerging Apex Variant

  Threat Assessment: Low → Moderate (Escalation Detected)

  Core Attributes

  Strength: 11 ↑

  Force output significantly increased. Compressed pseudomuscle strands allow sudden burst violence. Lethality against small humanoids confirmed.

  Dexterity:14 ↑

  Multi-vector movement optimized. Capable of silent locomotion, adhesion, and ambush positioning.

  Vitality: 12 ↑

  Goblin skeletal mass fully integrated. Structural cohesion improved. Vulnerability spike detected during digestion phases.

  Endurance: 16 ↑

  Extended operational capacity confirmed. Entity can engage in prolonged predation cycles without rest.

  Intelligence: 18 ↑

  Advanced pattern recognition, threat modeling, and tactical foresight observed.

  Wisdom: Calculated ↑

  Decision-making increasingly detached from emotional heuristics. Ethical considerations reduced to efficiency variables.

  Energy Reserves

  Mana: Low → Stable

  Elemental crystal exposure has altered mana conductivity.

  Passive ambient absorption rate improved.

  Mana leakage during stress responses reduced.

  Traits

  ? Amorphous Body — Damage mitigation via dispersal and absorption

  ? Basic Digestion Lv5 ↑

  Organic matter, small and medium humanoids digestible

  Absorption Rate: 18%

  Mid-digestion vulnerability detected

  ? Mind Retention (Anomalous)

  Consciousness persistence confirmed

  Deviation from species norm continues to widen

  ? Predatory Patience (New)

  Entity exhibits delayed action preference when probability of success exceeds 85%

  ? Proto-Hive Authority (New)

  Lesser beings recognize entity as dominant core

  Enables minion control through instinctual compliance

  Skills Acquired

  Consume — Level 10 ↑

  Efficiency increased. Nutrient loss reduced.

  Humanoid digestion optimized.

  Self-Reformation — Enhanced (Passive)

  Reconstitution speed improved.

  Structural instability during total mass conversion remains.

  Shapeshifting — Level 7 ↑

  Reduced mana cost.

  Greater anatomical precision.

  Available Forms:

  ? Lesser Goblin

  ? Partial Goblin Limb Adaptations

  Elemental Integration

  Elemental Affinity: Proto-Elemental (Unlocked)

  Entity has learned to inflict elemental damage through absorption memory.

  ? Elemental Strike (Unrefined)

  Applies elemental damage based on absorbed material

  Efficiency scales with exposure

  Tactical Skills

  ? Smoke Screen — Passive Mana Dispersal

  ? Camouflage — Environmental mimicry

  ? Silent Dissolution (New)

  Entity can eliminate targets without detectable sound or struggle

  ? Psychological Warfare - Entity uses fear, intimidation, and dominance as tools as much as physical strength

  ? Adaptive Evolution - Entity prioritizes evolving via intelligent consumption over brute force

  ? Subversive Control - Rather than conquer loudly, entity prefers infiltration, manipulation, and domination from within

  ? Chaos Induction (New)

  Target group cohesion degrades when first casualty is isolated

  Minion Registry

  Subordinate Units: 2

  ? Goblin — Conditioned

  ? Goblin — Conditioned

  Loyalty based on fear recognition and survival dependency.

  Emotional bonding: none detected.

  System Observations

  ? Entity no longer hesitates before lethal action

  ? Violence treated as logistical process

  ? Risk assessment updated post-ambush incident

  SYSTEM WARNING — MEDIUM PRIORITY

  Mid-Absorption State Vulnerability Identified

  While total mass conversion is active, defensive integrity is reduced by 62%.

  Recommendation:

  Develop perimeter control, sentries, or delegated processing.

  Titles Acquired

  Slime of Quiet Extinction

  Eliminated an organized humanoid group without triggering external threat response.

  Efficient Predator

  Demonstrated elimination with minimal wasted motion.

  System Recommendation

  Entity growth rate exceeds ecosystem safety margins.

  Future conflicts should be engineered, not reacted to.

  [SYSTEM NOTE — CONFIDENTIAL]

  Entity has begun reframing morality as optimization logic.

  This behavior mirrors recorded patterns in catastrophic entities.

  Observation ongoing. No intervention authorized.

  That Time I got Reincarnated as a Slime, Overlord and The Great Devourer.

  Devourer and its grim, bureaucratic world of terror.

  Ambition.

  That Time I Got Reincarnated as a Slime asks,

  What if a kind man built a monster nation through friendship and morality?”

  Rise of the Celestial Maw asks:

  Like Rimuru, he evolves through consumption.

  Like Rimuru, he will kill thousands if it means survival.

  Heikin rules through design.

  Were this story differs from Overlord

  Heikin engineers a theology that replaces them.

  Heikin wipes out an army, then:

  Compost them.

  Feed crops.

  Reduce rebellion.

  Adjust regional stability values.

  What to Expect

  For Readers Who Want:

  a pantheon forged from discarded angels, abyssal outcasts, and weaponized faith.

  Final promised synopsis

  It’s about building systems where resistance becomes irrational.

  Strategy becomes dominion.

  Dominion becomes faith.

  Power doesn’t belong to the worthy.

  It belongs to those who take it—and build systems that keep it.

  Just a dungeon. A body made of hunger.

  Gambling is legal—taxed, monitored, and profitable.

  Bliss is encouraged.

  Housing is free—because obedience is cheaper than rebellion.

  Legal vice. Total surveillance. Rebellion is predicted before it begins.

  It is a story of utopian results born from dystopian precision.

  Of peace enforced not by kindness, but by inevitability.

  Of a slime who doesn’t want to save the world—

  He wants to replace the system that runs it.

  Motto

  “…And once blissful like sheep, order and rebellion tick like clockwork—while they remain too full of honey to bite the hand that feeds.”

  efficiency as salvation”.

  I'm writing how people quietly consent to one.