The library was a tomb of silent knowledge, and Kairo was its sole, voracious inheritor. He found Martha in the history section, where she had been meticulously organizing the books he'd requested into a coherent research library. The sight of him, emerging from the basement stairs covered in dust and the faint, metallic scent of the dungeon, made her jump.
"You're back," she said, her relief palpable. It had been nearly half a day since he'd left.
"Report," Kairo said, his tone all business as he shrugged off his pack. "Any disturbances? Visitors?"
"None," Martha replied, shaking her head. "The silence has been… absolute. Frighteningly so. I've finished the preliminary sorting of the texts on metallurgy and engineering. The medical texts are more complex." She gestured to a series of carts laden with books. "Your new barricade designs are also excellent. I managed to reinforce the main hall entrance. It's much stronger now."
Kairo nodded, a flicker of approval in his eyes. She was proving her worth. "Good. Your next task will be more complex."
He unrolled the [Blueprint: Golem Sentry] on a large reading table. The complex schematic of runes, gears, and power conduits glowed with a faint blue light, a piece of otherworldly technology laid bare upon old-world wood. Martha stared at it, her librarian's eyes widening at the impossible design.
"What… what is this?" she breathed.
"My next project," Kairo explained. "It's an automaton. A defender. Building it is beyond our current capabilities, but understanding it is not. This schematic combines principles of mechanics, metallurgy, and a form of energy I call 'mana'. I need you to create a new research path. Cross-reference everything we have on robotics, electromagnetism, and material science. I need to know the most efficient methods for refining low-grade iron ore. I need to understand the principles behind creating a stable electromagnetic field from a direct energy source."
Martha looked from the impossible blueprint to Kairo's dead-serious face. This went far beyond simple cataloguing. He was asking her to be the head of research and development for a one-man technological revolution. The sheer audacity was terrifying, but a part of her, the intellectual core that had driven her entire life, sparked with a morbid and undeniable curiosity.
"I… I will see what I can find," she said, her mind already racing through the Dewey Decimal System, connecting disparate fields of science.
While Martha began her new, monumental task, Kairo descended into the library's deep basement. He found what he was looking for in the building's maintenance workshop: a small, sturdy workbench, a set of tools, and, most importantly, an old kiln used for art restoration, which he could modify into a crude forge. This would be his first laboratory.
He laid out his materials: the [Scrap Metal] and [Low-Grade Mana Cores] from the Labyrinth. His goal was not to build a warrior, but an intelligence network. He needed eyes and ears throughout the city. He began to work, his movements precise and economical. He melted the scrap metal in the super-heated kiln, skimming off the impurities. He hammered the refined metal into small, spider-like components: legs, a chassis, a small housing for a photoreceptor. The work was crude, but functional.
The final, crucial step was the synthesis of two worlds. He took a tiny, sharpened tool and began to painstakingly inscribe a simple rune onto the main chassis of his first creation—a rune from his past life that signified [Patrol]. Then, he carefully inserted a [Low-Grade Mana Core] into its housing and etched another rune on the casing: [Transmit]. This was the magic, the fusion of System energy and real-world engineering.
He channeled a tiny sliver of his own mana into the core to activate it. The core pulsed, the runes glowed for a second, and then the small metal spider's single red photoreceptor flickered to life. It took a hesitant step, then another, its movements jerky but controlled. It was alive.
A series of unique notifications, the likes of which he had never seen even in his past life, appeared before him.
[You have successfully combined real-world scientific principles with System materials and runic knowledge!]
[A new skill has been created through your unique actions!]
[You have gained the Unique Crafting Skill: Runic Engineering (Beginner) Lv. 1]
[You have successfully crafted a 'Scout Automaton (Mk. I)'.]
A slow, cold smile spread across Kairo's face. This was it. This was the true path to power, a path no one else could walk. He spent the next few hours in a state of intense focus, creating a dozen more of the spider-like scouts.
His next step was to deploy his new network. He linked his own System interface to the [Transmit] rune on one of the scouts. A new window appeared in his vision, grainy and monochrome, showing him what the scout saw through its photoreceptor. He directed the small automaton out of the library through a drainage pipe, its metal legs clinging to the walls as it scurried into the ruined city.
The world through the scout's eye was a brutal, Darwinian theatre. He saw Jax's crew on the bridge, their numbers depleted, fighting amongst themselves over the remaining scraps of food. Their leader's swift and humiliating defeat had shattered their unity. They were no longer a threat.
He directed another scout towards the city center. It crawled up the side of a skyscraper, giving him a panoramic view. He spotted a large, fortified encampment built around a hospital. It was organized, with walls made from buses and trucks, and armed lookouts on the roof. It was a settlement of several hundred survivors. He focused the scout's lens, his heart rate remaining perfectly even as he saw the figures directing the defenses.
Rei stood on the wall, pointing and giving orders, his natural charisma already having forged this desperate mob into a cohesive unit. Darius was beside him, a stoic pillar of strength, his shield a symbol of the settlement's defiance. And then he saw her.
Lena was not on the front lines. She was in the courtyard, overseeing the distribution of medical supplies and rations. She was no longer the carefree university student or the tearful woman on the battlefield. Her face was thinner, harder, but filled with a fierce, competent resolve. She moved with authority, her commands obeyed without question. She was the heart of their operation, the quartermaster of their burgeoning faction.
Kairo used [Scan] through the scout, a function of his high SEN stat and his unique connection to his creation.
[Lena]
Level: 6
Class: Field Commander
She had grown strong. She had adapted. A part of the old Kairo might have felt a flicker of pride or a pang of loss. The new Kairo felt only the cold satisfaction of an enemy proving to be a worthy target.
"So, you've become a leader," he whispered to the grainy image. "Good. Build your kingdom. Gather your strength. The fall will be that much sweeter when it comes from a height."
He pulled his consciousness back from the scout, the monochrome image vanishing from his mind. He was in his dark workshop, surrounded by his silent, watching spider-automatons. He had the intelligence he needed. He knew where his primary adversaries were, their strength, their structure.
He walked over to the workbench where the [Golem's Heart] pulsed with its steady, powerful light. The library had given him knowledge. The Labyrinth had given him resources. His enemies were building an army of people. He would build an army of steel and runes. His path was clearer than ever. He needed a true forge, a secure factory, and a mountain of raw materials. The library had served its purpose. It was time to find a new, more permanent base of operations, a place where he could bring the impossible designs in his head to life.