Genetic Engineer in a Tamer's World

The fifth-floor work chamber was completely quiet as the midnight hours ticked away. Shadows from the heavy stone pillars stretched across the floor under the dim light of the lamps.

At a corner table, Kale Ardentis was surrounded by parchment, preservation jars, and chemical instruments.

To any observer, he was simply working through the baseline experiments his master had dumped on his desk... a tedious mixture of basic Toolcraft and Pillcraft meant to prepare him for advancement. But the corner of his desk held a far more dangerous secret, shielded from prying eyes by a subtle layer of localised mana.

Kale slowly set down his carving knife, wiping his fingers. He retrieved an insulated metal container from his spatial storage. When he opened the lid, orange light spilt across his face, accompanied by a wave of heat that made the air shimmer.

Inside lay the five Ember-Drake Eggs he had harvested from Inferno Hollow, their green shells covered in pulsing black stripes that thrummed with volcanic energy.

Beside them sat glass vats containing neutral Crystal Slime bases... transparent, jelly-like organisms that vibrated slowly, completely devoid of any active elemental attributes.

His initial plan had been to create the Terra Calyx... an earth-attributed chimaera to provide a defensive foundation. But the fire integration in the subterranean tomb had forced a shift in his calculations.

Neo, resting silently in his shadow, possessed a half-formed flame core that was far too volatile, threatening to reject its own power. Feeding Neo high-density fire materials directly posed a massive risk of genetic collapse.

Instead, Kale needed a biological buffer... a living catalyst that could absorb the harsh elements of the forest and filter them into a pure stream of energy.

He pulled a glass vat closer, centring the Crystal Slime base. Using his unified Trinity Crafting skill, he began microcellular extraction to isolate the genetic nodes responsible for the slime’s neutrality and cellular viability.

Next, he used a surgical needle to extract the pure, molten fire essence from the core of one Ember-Drake Egg.

The moment the fluid touched the glass, it hissed violently, threatening to crack the container. The temperature spiked, and sweat began to bead on his forehead as he adjusted his grip.

The critical ingredient was the heat-absorbing skin variables of the Flame Salamander. Kale had mapped these sequences during his trials, and he now began to splice them onto the slime’s outer membrane.

The fusion was volatile. One wrong temperature fluctuation, a single millisecond of hesitation, and the immense heat would liquefy the slime’s fragile neural pathways before they could form, reducing the project to a puddle of useless sludge.

Kale gritted his teeth, manually balancing the rapid heat spikes by injecting his own mana, keeping the energy pathways aligned with precision.

He worked in silence, his fingers moving with a disciplined speed. He wove the elemental strands through the slime’s nucleus, utilising the chamber’s specialised stabilisation arrays to anchor the conflicting forces. The orange light within the vat grew brighter, pulsing in a slow, rhythmic cadence.

The neutral jelly of the slime began to change, absorbing the volcanic properties of the drake egg and the salamander’s skin until its translucent body turned a warm, incandescent orange. The cellular structure settled, the genetic pathways locking together with a soft, biological click.

The complex synthesis succeeded perfectly. In the glass vat stood the Ignis Core, Mark I... a small, pulsing, jelly-like orb about the size of a fist. It possessed no combat capabilities, claws, fangs, or physical defence.

It was a completely harmless auxiliary chimaera, yet it radiated a steady, warm hearthlight that filled the quiet corner of the room with comforting warmth. It was a living battery, an elemental engine designed solely to absorb and refine raw thermal radiation.

Kale did not waste a second. He leaned over the table, extending his right hand toward the orange orb. He focused his mind, initiating the taming bond with the newly created chimaera.

Because the Ignis Core was a synthesised creature, it did not trigger the World Dragon’s curse, allowing his natural soul harmony to flow through the connection without resistance.

A soft, warm energy travelled from the orb into his hand, crawling up his arm and settling deep within his core, establishing a stable, dual-pathway link.

The value of the Ignis Core became apparent the moment the bond solidified. It acted as an external, highly efficient filtration system. Instead of Neo devouring raw, hostile materials and risking mutation, the Ignis Core would act as the primary filter.

It would absorb the harsh, unrefined heat from the environment or secondary catalysts, process it through its neutral slime base, and feed a purified, gentle stream of flame mana directly into Kale’s pathways. From there, the refined energy would flow through the taming bond into Neo’s system, safe and perfectly balanced.

As if sensing the engine, the shadow beneath Kale’s feet rippled like liquid ink.

Neo emerged from the darkness, his matte black scales absorbing the dim light of the chamber as he hopped onto the stone table.

The hydra’s six golden eyes were wide, all three of his heads focusing intently on the pulsing orange orb. The creature let out a low, inquisitive trill, its nostrils flaring as it detected the chimaera’s refined fire energy.

Kale guided the purified stream of flame mana through his pathways, directing it toward the soul link. The thrumming, volatile energy entered Neo’s chest, where the half-flame core had been a source of physical strain.

The moment the refined mana touched the core, the chaotic heat began to quiet down. The jagged, uneven edges of the half-core smoothed over, absorbing the pure element and solidifying into a stable, radiant sphere of deep crimson energy.

Neo let out a long, satisfied hiss from all three maws, his necks arching with a renewed vitality as the internal strain finally vanished.

The genetic parameters on his status window updated silently. The fire affinity thrummed with a steady, unyielding purity that no longer threatened to tear his body apart.

The Ignis Core had solved the bottleneck, providing the elemental stability they had desperately lacked since their return from the Tigerwood Forest. Kale reached out, gently stroking the warm scales of Neo’s central head, a rare smile touching his lips. They had secured the first pillar of their elemental ascension.