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"Why would someone come to Mount Hakobe alone?" Calvin asked, keeping pace with Lucy as they followed Natsu's trail upstream.
Lucy glanced at him, surprised by the question. "I'm actually pretty new to Fairy Tail myself, so I don't know all the details. The request mentioned investigating Vulcans, but..."
"Macao took a B-rank quest," Natsu called back, his tone unusually serious. He'd stopped running and was walking now, scanning the area with narrowed eyes. "There've been cases of Vulcans using Takeover magic on villagers near the mountain. Attacking settlements. The client wanted someone to figure out why they're suddenly so aggressive."
Calvin processed this information. Takeover magic—the ability to assume the form and powers of other beings. In his memories of the series, Vulcans could use a basic form of it, but they typically targeted humans for transformation, not exhibited coordinated aggression.
Something had changed their behavior pattern.
Environmental factor? Magical contamination? Or something else entirely?
His analytical mind catalogued possibilities as they reached the base of Mount Hakobe.
The temperature dropped sharply. Snow covered the ground in patches, increasing in density the higher the mountain climbed. The river they'd been following emerged from somewhere within the mountain itself, flowing from a crack in the rock face.
Calvin's life sense detected movement before his eyes registered it.
Six large signatures. Humanoid. Magical. Surrounding their position.
"Ambush," he said flatly.
Mountain Vulcans burst from the snowdrifts.
These were different from the Forest Vulcans Calvin had dissected. Larger, with white fur and brown facial features. Their eyes glowed with the same pupil-less quality, but brighter—more magically saturated.
Natsu's fists ignited. "Finally! Some action!"
The Vulcans moved with coordinated precision that suggested intelligence beyond animal cunning. Three engaged Natsu directly. Two flanked toward Happy. The last one—the largest—charged straight at Lucy.
"Kyaa!" Lucy fumbled for her keys.
The Vulcan grabbed her before she could summon a spirit and leapt backward, retreating up the mountain with shocking speed.
"LUCY!" Natsu roared, flame intensity increasing.
Two more Vulcans grabbed her while the coordinated group retreated, carrying her up the mountainside toward what looked like a cave entrance.
"Happy! We're going after them!"
"Aye, sir!"
In the chaos of Natsu launching himself after Lucy with Happy providing aerial support, none of them noticed Calvin slip away.
He'd detected something far more interesting than a Vulcan kidnapping—something his life sense had been screaming at him since they'd arrived at the mountain's base.
A massive concentration of ethernano. Not life force exactly, but raw magical energy so dense it registered as almost alive. Coming from inside the mountain, near where the river emerged.
Calvin knew from his memories that Natsu would rescue Lucy and Macao. Nobody died in this encounter. Nobody was seriously injured beyond bruises and exhausted magic reserves.
He could help, or he could investigate the energy source.
The choice was obvious.
Calvin moved along the mountain's base, following the river to its source. His black vines extended from the Dragon Scale coat, probing the rock face until they found the crack where water flowed out.
He pushed the vines deeper, widening the gap. Stone cracked. Ice shattered. Within thirty seconds, he'd created an opening large enough to enter.
The tunnel beyond was natural formation—rough stone walls slick with moisture, a thin stream running along the floor. Calvin followed it deeper into the mountain, using vines for handholds where the passage narrowed or dropped sharply.
The temperature fluctuated wildly. Patches of ice covered the walls in some sections. Other areas radiated heat that made the air shimmer. His life sense detected no creatures, but the ethernano concentration increased with every step.
After five minutes of descent, the tunnel opened into a cavern.
Calvin stopped at the entrance and stared.
The ceiling rose fifty feet overhead, completely covered in ice stalactites that glowed with internal blue light. The floor was cracked volcanic rock, heat radiating from fissures that glowed dull red. Steam rose where melting ice dripped onto hot stone.
And in the center, suspended between thermal extremes, sat a lacrima ore the size of his torso.
It pulsed with raw magical energy. Waves of ethernano emanated from its crystalline surface in visible ripples that distorted the air. The ore was the source of the river—condensation formed on its surface, dripped down, and pooled before flowing through cracks in the cavern floor toward the outside.
Calvin's analytical mind connected patterns immediately. The lacrima shards he'd found in the river weren't natural deposits. They were fragments worn away by constant water flow, carried downstream by the current over what must have been decades or centuries.
This was the source. A massive ethernano generator that had been feeding the river—and by extension, the entire forest ecosystem—with ambient magical energy.
He approached slowly, vines extending to test the ground stability. The thermal fluctuations were extreme enough to be dangerous. Too cold and the ice would trap him. Too hot and the volcanic rock would burn through his boots.
Calvin was ten feet from the ore when the ground shattered.
Stone exploded upward, reforming mid-air into a humanoid shape eight feet tall. Molten cracks glowed throughout its body like veins. Its eyes burned with red light.
A Fire Elemental.
The ceiling cracked simultaneously. Ice fell and coalesced into a second humanoid form, this one pale blue and radiating cold.
An Ice Elemental.
Both possessed the distinctive magical pattern Calvin recognized from the Vulcans. Not pure elemental constructs—these had been contaminated with Takeover magic. Mutations caused by prolonged exposure to the massive lacrima ore.
Through his life sense, Calvin detected Natsu's signature above him—in a cave system one level up. He'd reached wherever the Vulcans had taken Lucy. That fight would conclude soon.
Which meant Calvin had limited time before they came looking for him.
He drew Ivory and fired.
The blue ethernano beam struck the Fire Elemental's chest, punching through molten stone to hit the lacrima core at its center. The elemental staggered. Cracks spread from the impact point.
Then the cracks sealed. The lacrima core regenerated, drawing power directly from the massive ore behind it.
"Of course," Calvin muttered.
The elementals attacked in concert. Fire launched a stream of molten rock. Ice created projectile spears and sent them flying. Calvin's vines grabbed ceiling stalactites and yanked him upward, narrowly avoiding both attacks.
The molten rock splashed against the wall where he'd been standing. The ice spears embedded themselves in stone.
Calvin landed on a different section of floor and fired twice more—once at each elemental's core. Both hits connected. Both cores cracked.
Both regenerated within seconds.
The massive ore pulsed, feeding its children with unlimited magical energy.
Pattern recognition clicked: the elementals were extensions of the ore itself. Destroying them was pointless while the source remained active. He needed to neutralize the ore directly.
But approaching it meant navigating between two elementals specifically designed to control the cavern's thermal extremes.
Calvin holstered Ivory and focused on his vines. They extended in multiple directions, creating a three-dimensional web of anchor points throughout the cavern. He pulled himself up, swung laterally, dropped and rolled—using the vines for mobility while the elementals struggled to track him.
Fire breath scorched the air where he'd been. Ice walls erupted to cut off escape routes. Calvin navigated the chaos with the same methodical precision he applied to everything, each movement calculated to maintain optimal distance from both threats.
His eyes tracked the elementals' positions, their attack patterns, the timing of their coordinated strikes.
Too much visual information. Too many variables.
Calvin closed his eyes.
His life sense expanded to fill the void. The elementals' lacrima cores burned bright in his awareness—distinct signatures despite the overwhelming presence of the massive ore. He could track their positions, predict their movements based on magical energy fluctuations.
He fired Ivory without looking.
The beam curved slightly—he'd aimed wrong by three degrees—but still struck the Fire Elemental's core dead center. The construct collapsed, its form losing cohesion without the core's organizing pattern.
Second shot. The Ice Elemental's core shattered.
Both elementals dissolved into their base elements—puddles of water and piles of cooling stone.
Calvin opened his eyes and approached the massive ore. This close, the ethernano waves were almost painful. His magical pathways resonated with the energy, drawing it in involuntarily. The ore seemed to pulse in response, as if recognizing compatible magic.
He reached out to touch it—
The mountain shook.
Stone exploded from walls, floor, and ceiling. Ice and fire converged and reformed. Not two elementals this time.
Twelve.
They surrounded him in a perfect circle, cores glowing with hostile intent. The massive ore had expended a tremendous amount of energy creating them all simultaneously, but it still pulsed with power.
Calvin raised Ivory and calculated his odds. Twelve targets. Limited ammunition. Regenerating cores. Unfavorable terrain.
He was considering tactical retreat when his Dragon Scale coat moved.
Black vines erupted from the coat's lining—not the normal vines he controlled, but the dark ones that had consumed the crocodile corpses. They extended with predatory speed, and at the end of each vine, crocodile heads formed.
Scaled jaws with serrated teeth. Eyes that glowed with hungry intelligence. The heads struck at the elementals before Calvin could process what was happening.
They bit into lacrima cores and consumed them.
The elementals didn't just collapse—they were eaten. Absorbed. Their magical energy drawn into the crocodile-headed vines and channeled back into the coat, which pulsed with satisfaction.
Within fifteen seconds, all twelve elementals had been devoured.
Calvin stood frozen, staring at his coat. The crocodile heads retracted, dissolving back into normal vines that settled against his shoulders as if nothing unusual had happened.
His creation had saved him. Had developed a new ability without his input. Had manifested predatory constructs based on absorbed patterns from the crocodiles he'd let it consume.
The coat was evolving faster than he'd anticipated.
"Thank you," Calvin said to it quietly.
The coat pulsed warmth through their connection. Contentment. Maybe even something close to pride.
Calvin turned back to the massive lacrima ore. It had dimmed significantly—creating twelve elementals simultaneously had drained even its substantial reserves. This was his chance to excavate it.
Except for one problem: size.
The ore was easily three feet in diameter. His spatial pockets could hold the chimera lacrima, but he wasn't sure about something this large. And even if it fit, the sheer magical output might destabilize the pocket's dimensional folding.
He was analyzing extraction options when his life sense detected Natsu's signature falling.
Not descending. Not climbing down. Falling at terminal velocity.
Through the ceiling.
Calvin looked up just in time to see the cavern roof explode inward. Natsu crashed through stone and ice, trailing flames and cursing loudly, before slamming directly into the massive lacrima ore.
The impact was catastrophic.
The ore shattered like glass. Hundreds of crystal fragments scattered across the cavern floor, each one glowing with residual ethernano. The largest piece was maybe the size of Calvin's fist. Most were smaller—palm-sized or less.
Natsu bounced off the broken ore, hit the ground hard, and immediately started cursing. "That STUPID Vulcan! Throwing me through a MOUNTAIN! I'm gonna roast him!"
He stood up, flames still flickering around his fists, and spotted Calvin.
"Oh, hey Cal!" Natsu grinned despite the bruises forming on his face. "Didn't know you were down here!"
Calvin stared at him. Then at the shattered ore. Then back at Natsu.
"Thank you for your hard head," Calvin said flatly. "But don't expect a share of the lacrima crystals. They're mine."
Natsu blinked. "Huh?"
"However, for your contribution to solving my excavation problem, I owe you a favor."
"I... what?" Natsu looked around the cavern, finally noticing the scattered crystals. "What is all this stuff?"
"Raw magical resources. I'll explain later."
"Oh. Cool." Natsu's attention snapped back to the hole he'd fallen through. "That Vulcan's gonna pay for throwing me! It's DEAD!"
He crouched, flames erupting from his feet. "Fire Dragon's—"
"ROAR!" The blast propelled him back up through the hole like a rocket, trailing fire and battle cries.
Calvin watched him disappear, then looked at the scattered lacrima fragments.
"Well," he said to the empty cavern. "At least this time I got a good haul."
He began methodically collecting crystals, sorting them by size and ethernano density. The coat's spatial pockets had no trouble storing the fragments—individually they were much easier to manage than the massive ore had been.
Forty-three crystals from the river. Hundreds from this cavern. Enough raw magical material to fuel experiments for months.
And enough data on elemental constructs and mutation patterns to significantly advance his understanding of how life force interacted with pure magical energy.
Calvin worked in silence, cataloging each crystal, planning future experiments, thinking about resurrection mechanics and the Tiger's soul fragment waiting in his pocket.
Above, he sensed Natsu's fight concluding. Lucy's signature was stable. Macao's appeared—older, exhausted, but alive.
The canonical events were resolving as expected.
Which meant his timeline knowledge still had value, even if dark wizards and fake Acnologias suggested this world was more dangerous than the anime had shown.
Calvin finished collecting the last crystal and made his way back through the tunnel. By the time he emerged at the mountain's base, Natsu was standing over an unconscious giant Vulcan, breathing hard but victorious.
Lucy sat nearby with Macao, who looked like he'd been through hell but was conscious and talking.
Happy spotted Calvin first. "There you are! We thought you got kidnapped too!"
"I wasn't," Calvin said simply.
Natsu turned, grinning despite his exhaustion. "Did you see that?! I totally wrecked that Vulcan! It had tried to take over Macao's body but I burned it out!"
"I sensed the fight," Calvin confirmed. "Good work."
Lucy stood, brushing snow off her clothes. "What happened to you? You just disappeared during the ambush."
Calvin considered lying, then decided honesty was simpler. "I detected a large ethernano source inside the mountain. Investigated it. Found a lacrima ore deposit. Collected samples."
"During an emergency?!" Lucy's voice pitched higher. "We were being attacked!"
"You weren't in danger. Natsu's combat capabilities are sufficient for Vulcan-level threats."
Natsu laughed. "See? Cal gets it! I had everything under control!"
"That's not the point—" Lucy started, then sighed. "Never mind. At least everyone's okay."
Macao coughed weakly. "I need to get back to Magnolia. My son... I need to see Romeo."
"We'll get you home," Natsu said firmly. "Happy, can you carry Macao?"
"Aye, sir! He's not that heavy!"
As they prepared for the journey back, Calvin felt the crystals weighing down his pockets. Not physically—the spatial storage removed that burden. But he was aware of them nonetheless. Aware of the potential they represented.
Raw materials for creation. For experimentation. For understanding life itself.
He'd made significant progress today.
His coat had evolved combat capabilities.
He'd collected enough lacrima to fuel weeks of research.
And he'd confirmed that following Natsu led to valuable opportunities.
Maybe joining Fairy Tail was the right choice after all.
"Hey, Calvin!" Natsu called. "You coming back to Magnolia with us?"
Calvin looked at the pink-haired Dragon Slayer, at Lucy trying to help Macao stand, at Happy preparing to fly.
Patterns within patterns. People who fought for each other without question. A guild that protected its members even when they made stupid decisions.
It wasn't logical. But it was consistent.
"Yes," Calvin said. "I'm coming."
Natsu's grin widened. "Awesome! Wait till you see the guild hall! Master Makarov's gonna love you!"
They started the journey back down the mountain, back toward Magnolia, back toward Fairy Tail.
Calvin's coat pulsed contentedly.
Ivory hummed with stored power.
And deep in his spatial pocket, the Tiger's soul fragment waited patiently for the day he'd finally understand resurrection well enough to bring her back.
He was getting closer.
One pattern at a time.