The last thing Kai Voss remembered was a green light.
Not the warm green of leaves or the bright green of traffic signals—this was something between those two things, a color that didn't have a name yet, blooming through the windshield of a cab going sixty in a forty zone, right before it stopped existing.
He remembered thinking: I should have taken the subway.
Then nothing.
Then falling.
He hit something hard enough to knock the wind out of him, rolled twice, and came to a stop face-down in mud that smelled like iron and smoke. Every nerve in his body fired at once in a unanimous vote that he was alive, which was confusing, because he'd been very certain about the alternative.
Kai pushed himself up.
The sky was wrong. Too purple. Two moons—one full, one a pale crescent—hung over a battlefield that stretched in every direction as far as the smoke allowed him to see. Thousands of soldiers clashed in the valley below a broken stone fortress. He was on a ridge overlooking the whole catastrophe, which meant he'd fallen from approximately nothing, because there was nothing above him but open sky.
He had about three seconds to process this before a man came screaming over the ridge at a dead sprint.
The man was wearing plate armor with a glowing blue sigil on the breastplate. He was also on fire.
Behind him: something eight feet tall, with four arms and a face like a caved-in skull, moving at a pace that should have been physically impossible for its size.
Kai's body made a decision before his brain could weigh in. He rolled left. The monster's foot came down where he'd been, cratered the earth, and the armored man bought himself half a second by hurling a javelin of pure white light that punched through the creature's shoulder without slowing it.
"HELP ME!" the man screamed, in a language Kai should not have understood. He understood it perfectly.
"I literally just got here!" Kai shouted back, also in that language, which was alarming, but survivable problems came first.
The monster pivoted toward Kai—he was new, he was interesting, he was also the only person present not actively trying to hurt it. He scrambled to his feet, looked left, saw a dead soldier, saw a spear three feet from the dead soldier's hand, and made another decision.
He grabbed the spear.
Kai Voss had never held a weapon in his life. He was twenty-six years old, he worked in database architecture for a logistics company, and the most violent thing he'd done in the past decade was lose a recreational volleyball match. None of this mattered, because the monster lunged and instinct jammed the butt of the spear into the earth at an angle and the creature's own momentum drove the tip through the soft spot under its jaw.
It stopped.
It swayed.
It fell, and the ground shook.
Kai stood there with a dead spear in a dead monster, breathing so hard his ribs hurt, while the armored man stared at him.
The fire on the man's back had gone out. His sigil had stopped glowing. He looked exhausted and terrified and about nineteen years old.
"What's your class?" the boy demanded.
Kai opened his mouth. Closed it.
"Your class," the boy repeated, louder, like Kai was slow. "What level? That was a Gravecrown Ogre, they have forty thousand HP—"
"I don't know what any of those words mean in this context."
The boy stared.
"I died," Kai said. "In a cab. On a different world. I woke up here sixty seconds ago."
A long pause.
"You're the Summoned Hero?"
"I don't think so."
"Then why do you have that?"
The boy was pointing at Kai's chest. Kai looked down. Nothing visible. But when he looked at the inside of his eyelids—which was not a normal place to look for information but somehow felt right—he saw text.
Not warm, golden text the way he'd have expected from a fantasy game. This was cold white text on black, clinical and precise, like staring at a terminal window:
══════════════════════════════════════
ARCHITECT'S CORE — BOOT SEQUENCE
STATUS: INITIALIZING [47%.....]
HOST: KAI VOSS [ORIGIN: EXTERNAL]
WARNING: NON-STANDARD SOUL DETECTED
WARNING: DIVINE REGISTRY — NO MATCH
WARNING: RUNNING LEGACY PROTOCOLS
SCANNING HOST BASELINE...
> STRENGTH: 11 [UNASSIGNED]
> AGILITY: 14 [UNASSIGNED]
> ENDURANCE: 10 [UNASSIGNED]
> PERCEPTION: 17 [UNASSIGNED]
> COGNITION: 22 [UNASSIGNED]
CLASS ASSIGNMENT: PENDING
LOADING...
══════════════════════════════════════
"Huh," said Kai.
The boy grabbed his arm and started dragging him away from the battle, which was still very much happening a quarter mile below them. "Come on. Commander Seris needs to see you. Now."
"What's happening down there?"
"The Fall Tide. Monsters pour out of the Breach every year at the last moon of harvest. We hold the Aldric Wall or we don't." The boy glanced back at the dead ogre. "You really don't have a class?"
"I have... something. It says it's still loading."
The boy made a face like Kai had told him his leg was still being installed. "That's not how it works."
"A lot of things that are happening to me right now aren't how anything works."
They ran.
The Aldric Wall was less a wall and more a collection of fortified checkpoints built into a mountain pass that was the only ground route between the Breach—a permanent tear in reality that had existed for three hundred years—and the populated kingdoms of the continent's interior. Every autumn, the Breach expanded. Every autumn, things came through. Every autumn, the armies held or they died.
This was not Kai's problem, but it was very rapidly becoming his problem.
Commander Seris was a woman in her late forties with iron-grey hair cut short and a scar running from her jaw to her collarbone. She was directing the battle from a ridge command post, three aides relaying her orders, her own System's interface visible to anyone nearby—a golden holographic panel floating at her left shoulder, displaying unit positions and resource pools.
When the boy—Fen, apparently—dragged Kai in front of her, she gave him exactly two seconds of attention before returning to the battle.
"Fen. Report."
"He killed the ogre. Alone. No class. His System isn't responding normally."
That got her full attention.
She looked at Kai the way a surgeon looked at an unexpected X-ray result. Not alarmed. Clinically fascinated.
"Show me your interface."
Kai tried. He pushed the inside-eyelid view outward somehow, the same way you'd share a screen if you weren't sure you were doing it right—and apparently it worked, because Seris went very still.
"Fen," she said quietly.
"Yes, Commander?"
"Get Scholar Mira. Tell her I said to drop whatever she's doing."
"She's treating wounded—"
"Now, Fen."
Fen ran.
Seris looked at Kai with an expression that had moved from clinical to something harder to name. "Where did you get that system?"
"I don't know. It was just there when I woke up."
"Systems don't just appear. The gods assign them at Awakening, age sixteen, everyone in the continent—"
"I'm not from this continent."
"Clearly." She turned back to the battle below, and Kai got the impression she was buying time to think. "You killed a Gravecrown Ogre with a borrowed spear and no skills."
"I've watched a lot of action movies."
"I don't know what that means."
"Neither do I, actually, now that I've said it."
Below, a flare of light erupted where the main gate was holding—gold and white, some sort of AoE skill detonating and vaporizing a cluster of smaller monsters. The pressure on the line visibly eased. Seris exhaled once through her nose.
"The Wall will hold tonight," she said, more to herself than Kai. "It always holds the first night. It's the second and third nights that kill us."
She looked at him again. "Can you fight?"
"I don't know."
"You killed an ogre."
"I got lucky."
"Luck is a skill with no cooldown." She nodded, decision made. "You stay. You're under my authority until Mira tells me what you are."
"And if I refuse?"
Her expression didn't change. "Then you walk into the pass alone with no idea where anything is, and I watch to see how far you get."
Kai thought about it. "I'll stay."
Scholar Mira was forty, small, and wore her silver System interface floating above both shoulders like wings. She took one look at Kai's Architect's Core readout and sat down on a supply crate without being invited.
"That's not possible," she said.
"I've heard that a few times tonight."
"No, I mean—" She pressed a hand to her mouth, thinking rapidly. "The Architect's Core is theoretical. It's a pre-Pantheon system architecture. The gods built the current System from scratch after the Sundering War, three thousand years ago. What existed before that was—destroyed.
All of it was destroyed."
"Apparently not."
She stood back up, scholar's instincts overriding shock. She started circling Kai, her own interface tools extended, running readings he couldn't see. "It hasn't fully initialized yet. Forty-seven percent—why is it stuck at forty-seven?"
Kai checked. Still forty-seven. "Maybe it's a big installation."
"Don't be glib. This is—" She stopped. Stared at something in her extended readout that he couldn't see. "It's waiting."
"For what?"
"I don't know. But there's a conditional gate in the initialization sequence. Something has to happen before it'll continue loading." She lowered her tools. Her eyes were bright with something between terror and excitement. "Do you know what the Architect's Core does? Its theoretical function?"
"Tell me."
"The current System assigns classes, skills, levels. It's read-only for the user. You get what the gods give you. You work within it." She paused. "The Architect's Core, according to the oldest surviving texts, is the editing layer. The layer the gods themselves used when they were building the System."
The words landed with the weight of something much larger than their syllable count.
"You're telling me," Kai said slowly, "that I have admin access."
Mira looked at him blankly.
"In my world we have... never mind. You're saying I can edit the System."
"Theoretically. If it initializes. If you survive long enough. If the Church doesn't find out and execute you for heresy within the next ten minutes." She said this last part very casually.
"The Church."
"The Pantheon's mortal arm. They monitor System anomalies across the continent. A pre-divine architecture appearing in an unregistered soul will absolutely trigger—" Her interface pinged. She checked it. Her face went pale. "A detection flag."
"How long do I have?"
"Inquisitors travel by Gate. Maybe three days. Maybe less." She looked at Commander Seris, who had clearly been listening. "Commander."
Seris's jaw was set. "I heard."
"He can't stay here."
"He can't leave. The Tide runs three nights." Seris was quiet for a moment. "Three days. Then we deal with whatever comes."
Somewhere below, something roared—deep and resonant, a sound that carried the suggestion of very large teeth. The second wave was beginning.
Kai's interface pulsed. A new line had appeared beneath the loading bar.
INITIALIZATION GATE: [LOCKED]
CONDITION: Survive first contact (COMPLETE ✓)
CONDITION: Achieve cognitive recognition of system (COMPLETE ✓)
CONDITION: [REDACTED — INSUFFICIENT CLEARANCE]
LOADING: [47%.....]
Third condition: redacted. He'd need to figure that out.
He looked at the battle. He looked at his borrowed spear, still slick with ogre blood.
He looked at Mira, who was making notes with shaking hands, and Seris, who was already turning back to her command post, and Fen, who was staring at Kai like he was either the best or worst thing that had ever stumbled over a ridge at him.
"All right," Kai said, and picked up the spear. "Show me where I'm needed."