Fen cornered him behind the clinic the next morning.
"You killed the alpha."
Calder leaned against the wall. The alley behind the clinic smelled like medical waste and damp stone. "Teng weakened it. The fire from Guo probably—"
"Guo was unconscious with three broken ribs when the alpha died. Teng was on the ground. I was there, Cal. I saw where the fire came from." Fen's voice was flat. No rambling, no filler words. "You cast Tier 4 fire. I don't know how. But I saw the scorch pattern. That wasn't Tier 2 or 3. That was Professional grade."
Calder said nothing.
"You've been going into the forest every day since the Awakening. You come back smelling like smoke. You killed that bear in the clearing — don't look at me like that, I heard about the carcass. A farmer found it yesterday." Fen stepped closer. "Your core isn't empty."
"Fen—"
"Don't lie to me. You're bad at it. You talk more when you lie. Right now you're about to give me a three-sentence explanation for something that deserves one word. So just say the word."
Calder looked at his friend. Sandy hair, freckles, ink-stained fingers, green healing glow still faint around his knuckles from the work he'd done overnight at the clinic. Fen was smart. Fen was loyal. Fen also talked when he was nervous, and what Calder was about to share was the kind of thing that made people very nervous.
"If I tell you, you can't tell anyone. Not your parents, not the clinic, not a single living person."
"Obviously."
"I mean it. Not because I'm embarrassed. Because people in the capital kill people like me."
That stopped the momentum. Fen's flat expression cracked, and underneath it was the same fear Calder had seen on Mao's face. "What?"
Calder held up his palm. Flame Blast ignited — Tier 4, white-hot at the core, orange at the edges. Then he killed it and summoned Cutting Breeze. Then Stone Skin. Then Drip.
Four elements. One palm. Three seconds.
Fen sat down on a crate. Slowly, like his knees had made a decision his brain hadn't approved. "That's not... cores can't..."
"Mine can. No elemental restriction. No slot limit. Spells absorb instantly. And it generates energy on its own — one unit per second, every second. While I sleep."
"That's physically impossible."
"And yet."
Fen stared at his own hands, then at Calder's, then at the wall. His mouth moved through several sentences before he settled on one. "The Awakening crystal said Void Class."
"Yeah."
"There's nothing about Void Class in any current classification guide. I checked. But I found a reference in a historical text — Jang City library, restricted section, pre-Council archive. The last Void Class awakening was five hundred years ago." Fen looked up. "Cal, the last Void Class user was the Void Emperor. He conquered half the continent."
"I know."
"The Archon Council killed him. They established a standing kill order on any future Void Core user. It's still active. Instructor Mao—"
"Mao knows something. He warned me to stay invisible."
Fen put his face in his hands. His shoulders shook. For a moment Calder thought he was crying, but when Fen looked up, his eyes were dry and sharp. "So basically, you have the most powerful and forbidden core type in recorded history, the government will execute you if they find out, and you've been testing it alone in the forest like an idiot."
"That about covers it."
"You absolute—" Fen stopped. Breathed. "Okay. Okay. What do you need?"
"I need time. And I need you to not tell anyone."
"I'm not going to tell anyone, Cal. I'm going to help you." Fen stood up. "We need data. Your core mechanics — Essence generation rate, absorption range, upgrade thresholds, capacity limits. Right now you're guessing. I'm a Healer. I can scan your core without triggering identification alarms. We test this properly."
"Fen, it's dangerous."
"Everything about this is dangerous. At least let's be dangerous efficiently."
Calder looked at his friend. The nervousness was gone. Fen had a problem now — a research problem, a puzzle, something that demanded his obsessive brain's full attention. He looked more alive than he had since the Awakening.
"Fine," Calder said. "But not here. Deep forest. After dark."
---
They met at the Greenwall treeline at midnight.
Fen had brought a notebook, three textbooks, a stolen mana-measurement crystal from the clinic's supply closet, and a packed lunch. "Research requires fuel," he said when Calder looked at the sandwiches.
The testing took four hours. Fen scanned Calder's core with his Healer senses — a green probe that felt warm and intrusive, like someone was reading his diary through his ribcage. The results made Fen fill six pages of notes and break one pencil from writing too hard.
"Your core has no measurable boundary," Fen said, cross-referencing a textbook by moonlight. "Normal cores have a defined radius — physical limits to how much they can hold. Yours just... doesn't stop. My scan went in and the signal never came back. It's like dropping a stone into a well with no bottom."
"That's what the crystal felt like."
"And the Essence generation is constant — one unit per second, verified. But here's the thing." Fen held up his measurement crystal, which was glowing faintly. "The Essence isn't mana. Not exactly. It's denser. More fundamental. Like the raw material that mana is made from." He chewed his pencil. "I think your core doesn't process magic the way normal cores do. Normal cores are like specific tools — a fire core is a furnace, a wind core is a bellows. Yours is more like... soil. Raw potential. Anything can grow in it."
"You're using my metaphors now."
"Your metaphors are good. Shut up." Fen wrote more notes. "The absorption mechanic is the most concerning thing. Instant integration with no nurturing period means you're bypassing the body's natural resistance to foreign magical signatures. That should kill you. Or at minimum, cause core rejection — fevers, seizures, mana poisoning."
"None of that."
"I know. Which means your core isn't just accepting foreign spells — it's converting them. Translating them into its own format. Like a universal adapter." Fen looked up from his notebook. "Cal, do you understand how impossible that is? Every advancement in magical theory for the last three centuries has been built on the assumption that elemental incompatibility is a fundamental law. You're violating it casually."
"Didn't feel casual."
"I'm being serious. If this gets out, you won't just be executed for the kill order. You'll be studied. Dissected, probably. The things people would do to understand how your core works—" Fen stopped himself. "We need to talk about what you're going to do with this."
"I'm going to get stronger."
"Obviously. How?"
Calder told him about the plan that had been forming over the last three days. The Greenwall Forest was tapped out — he'd absorbed every wild spell within walking distance. But the forest connected to a chain of low-grade Spell Fields that ran north along the mountains. Deeper in, the magical concentration increased. Higher-tier wild spells, stronger beasts, more experience.
"I need Tier 5 and Tier 6 spells. They don't grow in Greenvale's fields. But the Greenwall runs all the way to the Ashvein range, and there are reports of Tier 4 wild spells in the deep forest. Beasts too. Tier 2, Tier 3 — good experience."
"You want to solo farm the deep forest."
"Not solo."
"Cal, I'm a Healer."
"Exactly. I need someone to patch me up when things go wrong. And things will go wrong."
Fen opened his mouth, closed it, opened it again. He looked at his hands — green-tinged, capable, the hands of a Tier 3 Healer who'd spent the last twenty-four hours treating combat injuries. Then he looked at Calder. Then at the dark forest stretching north beyond the trees.
"When do we start?"
"Now."
They hiked north for two hours, past the familiar Greenwall clearings and into denser forest where the ambient magic thickened. The air tasted different here — charged, metallic, like the moment before lightning.
Calder found his first Tier 2 fire spell an hour in. Inferno Bolt — a combat spell, offensive, designed for piercing. The void drank it without pause.
Then a Tier 2 wind spell: Storm Cyclone. Area damage, multi-hit. The void liked that one too.
By dawn, he'd absorbed eight new spells and hunted three Tier 2 beasts. Level 6. His fire arsenal was growing toward something dangerous. The Essence kept trickling, kept upgrading, kept pushing every spell toward its next tier.
Fen healed two minor injuries — a claw graze on Calder's ribs, a twisted ankle from bad footing on a slope — and filled another twelve pages of notes.
They stumbled out of the forest as the sun came up, exhausted, dirt-covered, and grinning.
"Same time tomorrow?" Fen asked.
"Same time."
---
Three days of deep forest farming.
By the third night, Calder's fire had reached Tier 6. The upgrade from Tier 5 to Tier 6 had unlocked something new: Flame Demon Summoning. A summoning spell. He could create a fire elemental — a Tier 6 autonomous construct that fought on its own and persisted until destroyed or dismissed.
He tested it in a clearing a mile from the nearest settlement.
The flame demon materialized from a circle of fire — seven feet tall, humanoid, wreathed in orange flames that crackled and spat. It had no face. Just a vaguely head-shaped mass of fire above broad, burning shoulders. It turned toward Calder and waited.
"Go," Calder said. "Hunt."
The demon turned and crashed into the forest. Within seconds, Calder heard the sounds of combat — roars, explosions, trees snapping. The demon was engaging beasts. Fighting them. Killing them.
And every kill fed back to Calder. Experience. Essence. Level gains.
The flame demon didn't tire. It didn't sleep. It didn't need direction once pointed at a target zone. It simply burned through everything in its path, and Calder's core grew with every death.
He summoned two more. Then three.
By the third night, five flame demons roamed the Greenwall Forest, and Calder sat on a hillside watching distant fires flicker between the trees. His level had climbed from 6 to 15 in seventy-two hours. His fire was Tier 6. Wind was Tier 5 from passive Essence alone. Earth and water lagged, but they were growing too.
The flame demons cleared a beast tide — a cluster of Tier 2 and Tier 3 beasts that had been building toward the farming settlements south of Greenvale. The Professional Association would investigate. They'd find evidence of a high-tier Reaper in the area.
But they wouldn't find Calder.
He sat on the hillside with Fen, who was eating a sandwich and writing notes, and watched his fire demons work. The distant flames painted the forest canopy in shades of orange and red, and below that, the spell-grain fields of Greenvale glowed their quiet amber.
"Cal," Fen said between bites.
"Yeah."
"You hit Level 15 tonight. That's first-advancement threshold."
"I know."
"First Advancement unlocks your third spell slot and a passive elemental bonus. For most Reapers, it takes six months to a year to reach."
"It's been a week."
Fen set down his sandwich. "What are you going to do?"
Calder watched the fires. Somewhere in the forest, a flame demon roared, and something else screamed. "I'm going to get stronger. Quiet-like. Strong enough that by the time anyone figures out what I am, they can't do anything about it."
"And if they figure it out before then?"
The fire flickered. The spell-grain hummed. The Essence pulsed, one per second, relentless.
Calder didn't answer. Some questions were better left hanging in the dark.
