Chapter 1 - Oathbinder
The train lurched forward, then snapped back. Metal shrieked against metal. Kael's shoulder slammed into the pole he'd been gripping, his bag dropping to the floor between his feet. The overhead lights died. Three seconds of absolute dark before the emergency strips flickered on, casting everything in sickly yellow-green.
Someone shouted. A woman two rows away pressed herself against the door. All the phones in the car lit up simultaneously.
Kael pulled his from his jacket pocket. The screen showed a message, no sender, no app icon, just text burning white against black:
SYSTEM INTEGRATION INITIATED. PLANETARY QUARANTINE ACTIVE. INDIVIDUAL ANALYSIS COMMENCING.
His stomach clenched tightly. Having read enough infrastructure-collapse scenarios, he recognized the signs of a coordinated communication failure. This was intentional. Someone deliberately sent this. The message scrolled.
ANALYZING SUBJECT: KAEL DREN
AGE: 29
OCCUPATION: LOGISTICS COORDINATOR
APTITUDE EVALUATION IN PROGRESS...
A man in a business suit stood up, waving his phone. "Is this— does anyone else see this?"
"I got it too." A teenager near the front, voice cracking.
"It's a hack," someone else said. "Has to be."
Kael's screen updated.
CLASS ASSIGNED: OATHBINDER
TIER: UNIQUE
CORE ATTRIBUTE: OBLIGATION ARCHITECTURE
COMBAT COMPATIBILITY: LOW
SURVIVAL PROJECTION: 11.3%
His pulse beat steadily in his throat. Eleven percent. He read the number again, then looked up. Half the train stared at their phones. The other half looked at each other, faces pale in the emergency lighting.
"What the hell is this?" The man in the suit turned toward Kael, then to everyone else. "Is this some kind of—" The train shuddered, interrupting the man. A sound came from somewhere beyond the walls. Kael's spine went rigid. He'd never heard anything make a sound that low.
His phone vibrated again.
TUTORIAL ZONE ASSIGNMENT: SECTOR 7-ATLANTA
DUNGEON BREACH IMMINENT
PREPARE FOR CONTACT
"Prepare for what?" the woman by the door whispered.
Kael bent down, grabbed his bag, and slung it over his shoulder. His hands stayed steady. His brain fell into the pattern it always followed when systems broke, mapping the variables, identifying the dependencies, and finding the through-line. Quarantine meant containment. Analysis meant sorting. Class assignment meant... what? A framework. Roles. He turned the phone over in his hand, skimmed the text again. Oathbinder. Not a combat class. The survival projection made that clear.
The teenager stood up. "My class is Bladeward. Combat compatibility: high. Does that mean anything?" The grinding sound came again, closer. The emergency lights flickered. Kael stepped toward the center of the car, away from the windows. A crack spider-webbed across the glass to his left.
"Everyone away from the sides," he said.
No one moved.
He raised his voice. "Step toward the middle. Now."
The man in the suit blinked at him. "Who the hell are you?"
"Someone who knows what structural failure sounds like." Kael pointed at the window. "That crack wasn't there ten seconds ago. Move."
Three people moved, then five. The teenager, eyes wide and still glued to his phone, stumbled into the aisle. The train swayed more forcefully this time. Kael grasped the pole again, feeling the vibration travel into his hand through the metal. His phone buzzed.
FIRST DIRECTIVE: SURVIVE THE NEXT 60 SECONDS
A timer appeared on the screen. White numbers counting down from sixty.
The woman by the door started crying. "I don't— I don't understand what's happening."
Kael glanced at the countdown: fifty-three seconds remaining. His chest was beating fast, yet his hands stayed steady. He surveyed the train: twenty-two passengers, one emergency exit at each end, and damaged windows. There were no weapons or additional details beyond what the phones displayed.
Survive.
He could do that. He'd built contingency frameworks for city-wide grid failures, water main breaches, and evacuation protocols for scenarios no one thought would happen. This was different, but the structure underneath, threat, time limit, and resource assessment, was the same.
"Listen," he said.
Half the car looked at him. The other half stared at their phones, the cracked windows, or nothing at all.
"I don't know what this is," Kael continued. "But if that timer's real, we have forty-five seconds. Stow your phones, hold onto something, and stay away from the glass."
"Why should we listen to you?" The man in the suit, voice pitched high.
"Because I'm the one talking and you're the one asking questions." Kael met his eyes. "Your call."
The man's mouth twitched. He shoved his phone in his pocket and grabbed the nearest pole.
Thirty seconds.
The grinding sound split into something sharper. A crack, then a hiss. Air pressure shifted. Kael's ears popped. The teenager stumbled and caught himself against a seat.
Twenty seconds.
"What's coming?" the woman by the door whispered.
Kael remained silent, unsure of what was happening. His mind raced through possibilities like derailment, tunnel collapse, gas leak, or explosive decompression, but none matched the sound or conveyed the message. Dungeon breach.
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Ten seconds.
The floor beneath his feet thrummed.
Five.
Kael's fingers tightened on the pole. His phone screen flared brighter.
Three.
The hissing stopped.
Two.
Silence.
One.
The entire left wall of the train tore open.
Metal peeled away in sections. The initial sound was a high, warped shriek that pierced Kael's ears. Following that, light burst through the opening, transforming the emergency lighting into flickering waves of disorienting color.
The train tilted, causing Kael's boots to slide on the floor. He braced himself by locking his knee against the seat base and gripping the pole with both hands. The woman who had been crying crashed into the far wall. Meanwhile, the teenager lowered themselves flat, wrapping their arms around a support beam.
Wind rushed through the gap. It wasn't just tunnel air; it carried a distinct smell, copper, burnt ozone, and an underlying organic rot blended with sterile cold. Kael's eyes adjusted. Beyond the torn metal, he saw the tunnel wall. Except that the wall had a hole in it. Edges smooth, perfect, circular. Three meters across. The blue light came from inside.
His phone vibrated against his ribs.
BREACH STABILIZED. DUNGEON ENTRANCE ESTABLISHED. THREAT ASSESSMENT: TIER 1 ENTITIES INBOUND.
The man in the suit quickly got up. "We have to leave. Over there, we can—"
"That door's locked," Kael said. "Emergency protocol. We're between stations."
"Then we break it."
"With what?"
The man looked around, his hands opening and closing at his sides. "I don't— there has to be—"
A shape moved through the tunnel, initially small, then approaching. Kael caught his breath. It had four legs, kept low to the ground. Its eyes reflected the blue light, turning it white and flat.
"Something's coming," the teenager whispered.
Kael observed its movement. Four-legged, around shoulder height, roughly half a meter tall. It had a slender build optimized for speed. His mind quickly processed the details: evaluating threat level, potential attack paths, and environmental advantages. However, he was unarmed, lacked data, and faced an eleven-point-three percent chance of survival.
The creature stopped at the edge of the breach, tilting its head. Kael observed its teeth, too many, and arranged strangely.
His phone buzzed once more.
ENTITY IDENTIFIED: TUNNEL SCOURGE (TIER 1)
COMBAT RATING: MODERATE
WEAKNESS: BLUNT FORCE TRAUMA TO CRANIAL CAVITY
The teenager's phone lit up. He read the screen, then looked at the creature. "I can fight it."
"You're sixteen," the woman against the wall said.
"My class—"
"Doesn't matter if you're dead."
Kael's fingers drummed once against the pole. Bladeward. High combat compatibility. The System assigned that class for a reason. He looked at the breach, the creature, and the people pressed into the center aisle. Twenty-two. Now, twenty-one visible, someone had moved toward the far end of the train.
The Scourge moved through the opening, claws dragging along the metal floor. Its head swiveled left then right, scanning the surroundings.
His mind ran the scenario: one combatant, untrained. One creature, unknown capabilities. Nineteen noncombatants in a confined space. Survival projection plummeted with every second they waited.
"Can you use your class?" he asked the teenager.
The kid looked at him. "I— there's a thing. Menu. Skills."
"Open it."
"I don't know how”
"Figure it out. Now." Kael kept his eyes on the Scourge. It moved forward another step. Muscles bunched under skin that looked slick and amphibious.
The teenager's hands shook as he jabbed at his phone. "There's a list. Guard Stance. Power Strike. Something called Threat Mark."
"What do they do?"
"It doesn't— there's no description. Just names."
The Scourge's head snapped toward them. Its mouth opened. The sound that came out hit Kael's sternum, subaudible bass that made his lungs vibrate.
"Guard Stance," Kael said. "Try it."
"How?"
"Think about it. Focus on it. The System responds to intent."
The teenager shut his eyes, jaw clenched. After a brief three-second pause, a pale gold, grid-patterned light erupted around his torso, geometric in design. This light coalesced into a shape that was partly energy and partly matter, a barrier, including a chest piece and vambraces.
The kid's eyes snapped open. "Holy shit."
The Scourge lunged.
Kael's hand shot out; he grabbed the woman sitting beside him by the shoulder and hauled her backward against the far wall. Her coffee flew from her grip and shattered against the floor, hot liquid spreading across the torn floor. She stumbled, caught herself against the emergency exit handle.
The creature exploded forward. Its powerful hind legs launched it across the confined space of the train, covering five full meters in a single, devastating bound. The air displaced around its muscular frame whistled past Kael's ears. Its front claws extended fully, each one the length of a chef's knife, curved and gleaming with moisture, and slammed into the teenager's chest.
The golden geometric barrier absorbed the impact, and bright white sparks cascaded from the point of contact, illuminating the kid's terrified face in stuttering flashes. The force of the blow lifted him clean off his feet and sent him flying backward into the row of seats behind him.
He hit the cushioned bench hard, his spine connecting with the metal armrest. The breath left his lungs in a sharp wheeze, but his torso remained intact. Blood didn't pour from punctured wounds. The translucent golden chest piece flickered but maintained its structural integrity.
The barrier held. The Scourge circled overhead. Its tail whipped out, snagging a seat back and ripping fabric and foam. The teenager spun around and then knelt. His face was pale.
"Power Strike," Kael said.
The kid swung. His fist lit up with the same golden energy that covered his chest, but this time the light blazed brighter, more concentrated. The luminous coating around his knuckles pulsed with raw force. His punch connected with the Scourge's muscular shoulder, and the impact rang out with a sharp crack that reverberated through the train.
The creature's entire body lifted off the ground. Its powerful frame, easily twice the weight of a grown man, hurtled sideways through the air. It crashed into the opposite wall with a bone-jarring thud, the metal panels buckling inward from the force. The Scourge rebounded immediately, its claws scrabbling for purchase on the smooth surface as it dropped back toward the floor.
Blood—thick, dark purple, and viscous like motor oil—splattered heavily on the gray linoleum. The alien fluid stuck to the surface, forming irregular pools that reflected the flickering overhead lights. Some of it also sprayed onto nearby seats, staining the blue fabric with dark, spreading blotches. Kael's phone vibrated.
COMBAT ENGAGEMENT DETECTED. OATHBINDER ROLE AVAILABLE: STRATEGIC SUPPORT.
He looked at the message. It was about strategic support, not combat. His survival chance stayed at 11%.
The Scourge recovered. It coiled, then sprang again. Faster this time. The teenager tried to dodge but was too slow. Claws raked across his thigh. The armor didn't cover them. Blood welled up, bright red against his jeans. He went down hard. The creature turned toward the rest of them.
Kael's pulse hammered in his throat. His hands were empty. His class was useless. The breach gaped open behind the Scourge, and the blue light kept pouring through.
His phone screen changed.
OATHBINDER SKILL AVAILABLE: BIND OBLIGATION
EFFECT: ESTABLISH MUTUAL TERMS BETWEEN SELF AND TARGET ENTITY. ENFORCE COMPLIANCE THROUGH SYSTEM FRAMEWORK.
RESTRICTION: REQUIRES CONSENT OR CONTEXTUAL LEVERAGE.
Kael read it twice. Bind obligation. Mutual terms. He looked at the teenager bleeding on the floor. At the Scourge stalking toward the cluster of people pressed against the far door. At the breach that could spit out ten more of these things any second.
Consent or leverage. He stepped forward, "I have a deal," he said. The Scourge's head swiveled toward him. Its eyes were flat white discs. No pupils.
Kael spoke again, louder. "You want to hunt. I can give you targets. Better targets. Outside this train." The creature's mouth opened. That subsonic hum again, deeper this time. It took a step toward him.
Kael held his ground. His phone burned hot against his ribs.
ESTABLISHING CONTEXT. ANALYZING ENTITY COGNITION.
ASSESSMENT: SAPIENCE LEVEL INSUFFICIENT FOR COMPLEX TERMS.
His stomach dropped. Insufficient level of sapience. The System couldn't bind what couldn't understand. The Scourge lunged at him.
