The evening after Silver rank testing should have been a time for celebration. Arin's party had passed the individual assessments, proving themselves capable of handling threats equivalent to Level 12. They had coordination trials scheduled in two days, and the promise of actual Silver rank status was closer than ever before.

  But something felt wrong.

  Arin couldn't quite identify what was bothering him as they walked Thornbridge's evening streets toward their inn. His core pulsed with an unease that had nothing to do with the testing or his performance. It was more instinctive, like the warning he'd felt before the shadow cat attacked him in the forest months ago.

  "You're quiet," Kelsa observed as they navigated through the merchant quarter. "More than usual, I mean. Something on your mind?"

  H A R D T O E X P L A I N F E E L S T R A N G E

  "Strange how?" Torvin asked.

  L I K E S O M E T H I N G B A D I S G O I N G T O H A P P E N

  Essa frowned, her hand moving to touch the holy symbol she wore. "I've been feeling unsettled, too. Like there's discord in the air. I thought it was just nervousness about the coordination trial."

  They reached the inn, a three-story building that catered to adventurers and merchants traveling through Thornbridge. The common room was crowded with the usual evening crowd, conversations and laughter mixing with the smell of food and ale.

  But as they entered, Arin noticed something. A table in the corner held four adventurers who weren't eating or drinking. They sat hunched over a map, speaking in urgent whispers, and their expressions carried the kind of tension that came from desperation.

  One of them was a young woman, maybe twenty-five, with the lean build and leather armor of a ranger. Her bow rested against the wall beside her, and her hands trembled slightly as she pointed at something on the map.

  [Human Ranger - Level 8]

  [Human Fighter - Level 7]

  [Dwarven Cleric - Level 7]

  [Half-Elf Rogue - Level 8]

  A Bronze rank party, all of them in the Level 7-8 range. Capable adventurers, but not ready for anything too challenging.

  Arin's party claimed a table across the room, and the innkeeper brought them food and drinks. But Arin couldn't stop watching the other group. Their body language screamed trouble, and his instincts continued to pulse with warning.

  "That's the Crimson Hawks," a voice said from a nearby table. Arin turned his vision to see an older adventurer, a scarred human with graying hair, speaking to his companion. "They've been taking contracts above their level for weeks now. Desperate for payment, from what I hear."

  "Someone in their party sick?" the companion asked.

  "Worse. The ranger's sister is dying. Some kind of wasting disease that the temples can't cure. There's supposedly a healing artifact in the Mourning Caves that could save her, but it's a Silver rank dungeon. They're nowhere near strong enough."

  Arin's core pulsed with recognition. He knew that kind of desperation intimately. The willingness to risk everything for someone you cared about, to push beyond your limits because the alternative was unthinkable.

  Like Levi did for me. Like I would do for my party.

  "They're going to get themselves killed," the scarred adventurer continued. "The Mourning Caves are filled with undead and worse. Bronze rank parties that go in there don't come back."

  Arin watched as the Crimson Hawks finished their whispered planning and stood to leave. The ranger's face was set with determination that bordered on reckless, and her party members looked equally resolved despite their obvious fear.

  "We should warn them," Essa said quietly. She'd been listening to the same conversation.

  "Warn them of what?" Kelsa replied. "That they're making a mistake? They already know that. Sometimes people do desperate things because they have no other choice."

  The Crimson Hawks left the inn, disappearing into Thornbridge's night streets. Arin continued to watch the door they'd exited through, his unease growing stronger.

  T H E Y A R E G O I N G T O D I E

  "Probably," Torvin agreed grimly. "But that's the adventurer's life. We all take risks. Some work out, some don't."

  But Arin couldn't let it go. That ranger's expression, the desperate hope mixed with fear, reminded him too much of Levi in those final days before the tournament. When his creator knew the odds were against him, he pushed forward anyway because giving up meant losing everything.

  The party finished their meal and retired to their rooms. Arin was staying in the cellar, as usual, a space the innkeeper rented cheaply since most guests wouldn't use it. But instead of settling in to rest, Arin found himself flowing back up the stairs and out into the night.

  The Mourning Caves were east of Thornbridge, according to the map he'd glimpsed on the Crimson Hawks' table. About three hours travel, located in a rocky area where old burial sites had been carved into hillsides centuries ago.

  I shouldn't do this. My party needs me rested for the coordination trial. Following strangers into a Silver rank dungeon is exactly the kind of reckless behavior Kelsa warned me about.

  But Arin kept moving through Thornbridge's streets anyway, following the faint trail the Crimson Hawks had left. His Darkvision let him track disturbed dust and recently passed footprints that would be invisible to most people.

  They're going tonight. Not waiting for morning. Because waiting means her sister might die.

  The city gates were still open, with guards checking travelers who came and went. Arin activated Stealth and flowed past them unseen, his upgraded Tier 2 version of the skill making detection nearly impossible.

  [-2 Essence per minute]

  Outside the walls, he picked up the Crimson Hawks' trail more easily. They were moving fast, practically running toward the caves, and Arin had to push himself to keep up without being noticed.

  Three hours later, as the moon climbed higher in the night sky, Arin saw the Mourning Caves. They were exactly as described, a series of dark openings carved into a hillside, each one marked with ancient symbols that probably warned of the dangers within.

  The Crimson Hawks stood at the entrance to the largest cave, their torches casting flickering light on the stone. The ranger was speaking, probably giving some kind of motivational speech to her party, but Arin was too far away to hear the words.

  Then they entered, disappearing into darkness, and Arin followed.

  ***

  The Mourning Caves were everything the scarred adventurer had warned about and worse. The air inside was cold and damp, carrying the smell of decay and ancient death. The walls were lined with burial alcoves, each one containing the remains of people who'd been laid to rest here centuries ago.

  And those remains weren't resting anymore.

  Arin moved through the caves in Stealth, following the Crimson Hawks at a distance. He watched as they fought skeleton warriors that emerged from alcoves, their bones held together by necromantic magic.

  [Skeleton Warrior - Level 9]

  [Skeleton Warrior - Level 9]

  The fights were brutal but manageable. The party worked well together, with their fighter holding the front line while the ranger picked off skeletons from range. The rogue moved through shadows, striking at vulnerable joints, and the cleric provided healing and divine magic that burned the undead.

  They were good. Skilled enough that Arin began to think maybe they'd actually succeed.

  Then they went deeper, and everything changed.

  The caves opened into a large chamber, easily a hundred feet across, with dozens of burial alcoves lining the walls. In the center stood a stone pedestal, and on that pedestal sat a crystal vial filled with glowing liquid.

  [Healing Artifact - Greater Restoration]

  The artifact they'd come for. The thing that could save the ranger's sister.

  But between them and the pedestal stood something that made Arin's core pulse with alarm.

  [Wraith Lord - Level 14]

  The creature was enormous, easily eight feet tall, made of shadow and malevolent energy. It wore the tattered remains of ancient armor, and its eyes burned with cold blue fire. The temperature in the chamber dropped twenty degrees just from its presence.

  "Gods above," the fighter whispered. "That's a Wraith Lord. We can't fight that."

  "We have to try," the ranger said, her voice shaking but determined. "Mira's dying. This is her only chance."

  "We'll die," the rogue said flatly. "A Level 14 undead? We're Level 7 and 8. It'll kill us all."

  "Then I'll go alone," the ranger said. She nocked an arrow and aimed at the Wraith Lord.

  The creature's head turned toward her, those burning eyes focusing with terrifying intelligence. It opened its mouth and released a sound that wasn't quite a scream, more like reality itself being torn.

  The ranger fired. Her arrow flew true, striking the Wraith Lord in the chest.

  And passed straight through, the spectral body offering no resistance.

  "It's incorporeal!" the cleric shouted. "Physical attacks won't work! We need magic or holy energy!"

  This tale has been unlawfully lifted from Royal Road. If you spot it on Amazon, please report it.

  The Wraith Lord raised one shadowy hand, and dark energy gathered around it. Arin recognized the buildup, the way essence concentrated before a major attack.

  They're going to die. All of them. In the next few seconds.

  Arin made a choice.

  He deactivated Stealth and used Charge, slamming into the ranger and knocking her aside just as the Wraith Lord's attack launched. Dark energy tore through the space where she'd been standing, carving a groove in the stone floor.

  [-5 Essence]

  "What the—a slime?" the fighter yelled.

  R U N G E T O U T N O W

  "We can't leave the artifact!" the ranger protested, trying to get around Arin toward the pedestal.

  C A N N O T B E A T T H A T T H I N G W I L K I L A L O F Y U R U N

  The Wraith Lord was already preparing another attack, this one larger than the first. Multiple beams of dark energy formed around its hands, targeting the entire party.

  "Move!" the cleric screamed, grabbing the ranger and pulling her toward the chamber exit.

  The party ran, the fighter and rogue providing cover as they retreated. Arin flowed after them, moving faster than they could run, trying to put himself between them and the Wraith Lord's attacks.

  Dark energy struck his mass, burning through him with cold fire that was nothing like any damage he'd experienced before. His mass didn't just tear, it dissolved, essence bleeding out at an alarming rate.

  [-45 Mass]

  [-30 Essence]

  Arin felt pain, real pain, worse than the shadow cat's claws or the kobold chieftain's blade. This was his very existence being unmade.

  But the party was getting away. They were going to make it.

  Then the tunnel behind them collapsed.

  The Wraith Lord had brought down the ceiling, sealing the exit with tons of rock. The party was trapped in the chamber, and Arin was barely holding together from that single attack.

  "We're going to die," the rogue said, his voice flat with resignation.

  The ranger was crying, her bow hanging uselessly at her side. "Mira's going to die too. I'm sorry. I'm so sorry."

  The Wraith Lord drifted toward them, taking its time now that its prey was trapped. It raised both hands, preparing a final attack that would end them all.

  Arin's consciousness was fragmenting from the damage, his thoughts becoming harder to hold together. But one thing remained crystal clear.

  I can't let them die. Not like this. Not when they were trying to save someone.

  He flowed forward, placing himself between the party and the Wraith Lord. His mass was depleted, his essence dangerously low, but he still had one advantage.

  Slimes were hard to kill permanently. Unless his core was destroyed, he could theoretically recover from any injury given enough time and essence.

  The Wraith Lord's attack launched, and Arin took the full force of it. Dark energy tore through him, shredding his gelatinous body into dozens of pieces. His vision fragmented into multiple perspectives as his mass scattered across the chamber floor.

  [-78 Mass]

  [-45 Essence]

  [WARNING: Core stability critical]

  [Mass: 42% of base]

  [Essence: 12/200]

  Arin's consciousness flickered. He could feel himself dying, his core's cohesion failing as it tried to maintain control over too little mass.

  But the party was alive. The attack hadn't reached them.

  "The slime," the fighter breathed. "It saved us."

  "We have to do something!" Essa's voice cut through Arin's fading awareness. Wait, when had his party arrived?

  Through his fragmented vision, Arin saw them. Kelsa, Torvin, and Essa, standing at another entrance to the chamber. They must have followed him, somehow tracking him.

  "The Wraith Lord!" Kelsa shouted. "We need to attack together! Essa, can you hurt it with holy magic?"

  "I can try!"

  The battle erupted around Arin's scattered remains. He tried to pull himself back together, but his mass wouldn't respond properly. The damage was too severe.

  The Wraith Lord turned its attention to the new threats, forgetting about the Crimson Hawks huddled against the collapsed tunnel. Dark energy and holy light clashed in the chamber as two parties fought a Level 14 undead creature they had no business facing.

  Arin watched, his consciousness growing dimmer. He saw Torvin take a glancing blow from the Wraith Lord's claws and go down. Saw the Crimson Hawks' cleric join Essa in casting holy spells, their combined magic actually hurting the incorporeal creature.

  He saw Kelsa and the Crimson Hawks' fighter working together, trying to keep the Wraith Lord's attention divided.

  But they were losing. Even with two parties working together, the level gap was too large. The Wraith Lord was taking damage but recovering faster than they could deal it.

  I can't die yet. They need me.

  Arin tried again to pull his mass together, focusing every remaining bit of essence on cohesion. Slowly, painfully, his scattered pieces began flowing toward his core.

  [Mass: 48% of base]

  [Essence: 8/200]

  It wasn't enough. He was too damaged.

  Then he saw the Crimson Hawks' ranger moving. She'd left the relative safety of the collapsed tunnel and was sprinting toward the pedestal, toward the healing artifact.

  "Kira, no!" her fighter screamed.

  The Wraith Lord saw her. It raised one hand, and dark energy gathered, enough to disintegrate her completely.

  Arin couldn't reach her in time. Couldn't protect her. Could barely hold his own mass together.

  But he could do one thing.

  He used the last of his essence on Charge, launching his pathetically small mass toward the ranger. Not to knock her aside this time. He didn't have enough mass for that.

  Instead, he flowed up her body, wrapping around her torso like armor, putting what remained of himself between her and the Wraith Lord's attack.

  [-5 Essence]

  The dark energy struck him, and Arin's world exploded into pain. His core screamed as it tried to maintain cohesion through damage that should have destroyed him completely.

  [Mass: 12% of base]

  [Essence: 1/200]

  [CRITICAL: Core failure imminent]

  Darkness.

  Not death, but something close to it. Arin's consciousness scattered across multiple small pieces, each one barely maintaining enough cohesion to exist.

  Through the fragments, he heard screaming, fighting, and the clash of magic.

  Then silence.

  Arin felt himself being gathered. Gentle hands collecting his scattered pieces, trying to put him back together. But it was too late. His core was failing, and there wasn't enough essence to sustain it.

  This is how I die, he thought. Protecting strangers in a cave. Levi would have approved.

  "He's dying," Essa's voice, thick with tears. "I can feel his life force fading."

  "There has to be something we can do!" Kelsa, desperate.

  "The artifact," another voice. The ranger, Kira. "The Greater Restoration. It heals all wounds, removes all ailments. Maybe..."

  "That's for your sister!"

  "She's been dying for six months. He's dying now. And he saved me. Twice." The sound of liquid pouring. "Please work. Please."

  Cool liquid touched Arin's core. The healing artifact's essence flowed into him, and his consciousness sparked back to full awareness.

  [Greater Restoration Applied]

  [Healing all damage]

  [Restoring essence]

  [Repairing core]

  [Mass: 100% of base]

  [Essence: 200/200]

  But something else happened. The healing didn't stop at repair. It continued, changing, evolving.

  [Soul resonance detected]

  [Sacrifice for others recognized]

  [Willing to be harmed to protect]

  [Evolution conditions met]

  [Species evolution available: Adaptive Slime → Humanoid Slime]

  [Accept evolution? Y/N]

  Arin didn't hesitate.

  [Y]

  [Evolution commencing]

  [Warning: Evolution will cause loss of consciousness]

  [Estimated duration: 12 hours]

  The world faded, but this time it was different. It wasn’t death but transformation.

  ***

  Arin woke to the sound of voices arguing above him.

  "—definitely still alive, I can sense his core—"

  "—but it's changing, the structure is different—"

  "—twelve hours since he went dormant, we should—"

  Twelve hours?

  Arin tried to move and found that his body responded differently than before. Where he would normally flow, he now felt limbs. Actual limbs with joints and structure.

  He opened his eyes. That was different. It was eyes. He had singular vision, not 360 degrees anymore.

  The chamber ceiling came into focus above him. Stone, carved with ancient symbols. He was still in the Mourning Caves, lying on something soft. A bedroll?

  Arin sat up, and the movement felt strange. He looked down at himself and froze.

  Hands?

  He had hands. Not tendrils of slime shaped like hands, but actual humanoid hands with fingers and thumbs and structure.

  I have arms? Legs? Even a torso?!

  All made of slime still, translucent and red-tinted, but shaped into humanoid form with disturbing accuracy.

  [Name: Arin]

  [Species: Humanoid Slime]

  [Level: 11]

  [Current Form: Humanoid]

  [Mass: 100% of base]

  [Essence: 180/200]

  "He's awake!" Essa's voice, followed by rapid footsteps.

  Arin tried to speak and found his mouth worked, sort of. Sound came out, though it was garbled and unclear. "Ahhh... uhhhh..."

  "Don't try to talk yet," Kelsa said, kneeling beside him. Her expression was a mixture of relief and wonder. "We don't know how much of this form is actually functional."

  But Arin kept trying. He needed to form words, to make sounds that meant something.

  "Thhhank... yuuuu..."

  The words came out slurred and strange, but comprehensible. He'd spoken. Actually spoken.

  Kelsa's eyes widened. "You can talk?"

  "Lllittle," Arin managed. Speaking was hard, required concentration to form the right sounds, but it was possible.

  Around him, both parties were staring. His own party with expressions of shocked joy, and the Crimson Hawks with gratitude and wonder.

  The Wraith Lord Arin tried to ask, though it came out more like "Wrrraith Llllord?"

  "Dead," Torvin said, moving into Arin's field of view. "Took all seven of us and most of our mana and stamina to bring it down. Or Essence as you call it.” He shrugged at the mentioning of the three names given to the energy they often talked about. “We found the artifact, and Kira used it on you."

  Arin looked at the ranger, Kira, who sat nearby with tears streaming down her face.

  "My sister," she said quietly. "I could have saved her. But you... You were dying. You saved me twice. I couldn't let you die."

  "Ssister?" Arin asked.

  "She'll die in a few weeks now," Kira said, her voice breaking. "Without the artifact, there's nothing that can help her."

  Arin's core pulsed with guilt, gratitude, and confusion. This woman had sacrificed her sister's life to save him. A slime. A monster she'd just met.

  He tried to stand and found that his legs worked differently from what he was used to. Kelsa steadied him as he nearly fell, and slowly, awkwardly, Arin got his feet under him.

  He was short, maybe five feet tall, with a humanoid body made entirely of translucent red slime. His features were indistinct, like a sculptor's rough draft of a person, but recognizable as humanoid.

  "How?" Essa asked. "How is this possible?"

  [Species Trait Unlocked: Form Shift]

  [Can alternate between Slime Form and Humanoid Form]

  [Essence cost: 10 to shift forms]

  [Maintaining Humanoid Form: -1 Essence per hour]

  "Evvvolution," Arin managed to say. "Sssystem... said... evvvolution."

  "An evolution," Kelsa breathed. "Slimes can evolve into humanoid forms? I've never heard of that."

  "Adaptive Slime," Torvin said. "He's not a normal slime. Never has been."

  Arin took a shaky step forward, then another. Walking was extremely difficult at first. The balance and coordination his slime form needed was not something he was used to. But he was getting it.

  He approached Kira and tried to form the words carefully.

  "Sssister... we... ssave... together."

  Kira looked up at him, confused. "What?"

  "Help... save... sister," Arin tried again. "Find... way."

  "There is no other way," Kira said. "The Greater Restoration was the only thing that could cure her."

  Arin's core pulsed with determination. This woman had sacrificed everything to save him. He would find a way to return that debt.

  But first, he needed to learn how to function in this new body. How to walk without falling. How to speak without slurring every word. How to be something that could pass as humanoid in human society.

  It would take time, practice, and patience.

  But Arin had learned before, when Levi taught him in those early days. He could learn again.