The city of Ardin swallowed Ethan and Sera with its noise colors and currents of mana that drifted like tides across the streets. Ethan had never seen so many people manipulating mana openly. Vendors used floating stones to display goods. Children played games by shaping tiny sparks in the air. Even simple street lamps responded to the mana density of the crowd glowing brighter when more people walked near. For Ethan it was overwhelming yet exhilarating because each detail represented untapped engineering potential.

Their first destination was the Rune Smith District a sprawling network of workshops where craftsmen combined metalwork with arcane symbols. Sera led him through the maze of stalls until they reached a workshop run by an elderly rune smith named Haldric. His hands were scarred and his beard tangled yet his eyes were sharp with the alertness of someone who read patterns the way others read words. When Sera introduced Ethan and explained that he was building a mana detection device Haldric frowned with disbelief. He asked Ethan to describe the prototype. Ethan explained the ring shaped frame the focus cores the conductive threads and the resonant pattern it produced. Haldric listened quietly then asked Ethan to show him.

Ethan placed the prototype on Haldric’s worktable. The old craftsman examined it carefully tracing the runes with a gentle touch. He asked Ethan why he placed the cores in a symmetrical pattern. Ethan explained that stability required equal distribution the same way imaging coils in his world used evenly spaced components to avoid distorted readings. Haldric chuckled and said Ethan talked like a scholar from a foreign academy. Ethan simply smiled. He could not tell him the truth.

Haldric then placed his hand inside the ring and released a small controlled pulse of mana. The cores glowed faintly responding to his output. Haldric raised his eyebrows. He said the device reacted in ways he had never seen before. Most tools created reflection or absorption not mapping. Ethan described how the device detected disturbances. Haldric muttered that such reading techniques were unheard of. He asked Ethan if he could build a larger version with better clarity. Ethan said yes but he needed stronger cores metal frames with higher resonance and rune plates with multi directional flux channels.

The old rune smith laughed loudly. He said Ethan spoke madness yet brilliant madness. He asked Ethan if he had coin to pay for the materials. Ethan admitted he had almost none. Haldric sighed but said he admired ambition especially ambition that aimed to heal. He offered Ethan a deal. Ethan would work in the workshop helping with simpler tasks while Haldric provided basic materials and guidance. It was not common for a master craftsman to offer such terms but Haldric sensed potential and danger. He whispered that many in Ardin feared new ideas especially ideas that challenged the Healer Guild’s authority.

Ethan accepted the offer with gratitude. For the next hours he observed Haldric’s work learning how runes acted as control circuits guiding mana through metal. Haldric explained that certain symbols amplifed flow while others stabilized it. Ethan noticed how rune sequences resembled signal modulation patterns in his world. He began sketching possible arrangements for a multi layered array capable of reading full body mana structure. Haldric watched him draw and admitted he had never seen such diagrams but could understand their purpose.

During a break Ethan asked Haldric about the Healer Guild. The old man’s expression turned grim. He said the Guild kept strict control over healing practices and often rejected inventions that threatened their influence. He said healers with unconventional ideas were expelled or silenced. Ethan felt a cold weight in his stomach. He asked if the Guild would interfere with his work. Haldric nodded slowly. He said they already knew his name. They already knew about the prototype. And now that he stood in Ardin their eyes were on him.

Despite the warning Ethan continued working. By midday he and Haldric constructed the frame for a larger scanning ring with stronger metal and more stable channels. Sera assisted by adjusting mana flow to test resonance. Each iteration improved clarity. Haldric began calling Ethan the strange engineer from nowhere. Sera teased him saying he sounded like someone from a lost academy. Ethan only smiled because there was truth in both statements.

That evening as the district quieted a soft knock came from the workshop door. A young woman dressed in pale blue robes entered. She carried the emblem of the Healer Guild on her chest. Sera tensed immediately. Haldric’s eyes narrowed. The woman introduced herself as Lira an apprentice from the Ardin branch. She said she came not to accuse but to witness. She had heard of the device and wanted to see if the rumors were true. Ethan hesitated wondering if this was a trap. But Sera nodded at him urging caution but agreement.

Lira examined the prototype with fascination. She said healers trained for years to sense disruptions yet Ethan’s device identified patterns instantly. She asked if the device could help healers reduce mistakes. Ethan said that was the entire purpose. Lira smiled sadly. She said many healers wished for tools like this but the Guild forbade experiments not blessed by their council. She warned Ethan that the Guild might visit soon not with curiosity but suspicion.

Before leaving Lira whispered to Sera that Ethan must be careful. The Guild protected tradition more fiercely than the well being of patients. Sera clenched her fist but thanked her. Ethan listened quietly realizing how deep the resistance ran.

After Lira left Ethan returned to the prototype. Haldric asked if he still wanted to continue knowing the danger. Ethan said innovation always carried risk and that people deserved safer healing. Haldric nodded approvingly. He said Ethan had the heart of a craftsman who believed in purpose not power.

That night Ethan worked late shaping runes smoothing metal aligning cores. Sera stayed beside him mixing restorative herbs and calibrating mana flows. Haldric fell asleep in his chair muttering about young people who never rested. The workshop glowed with soft blue light from the unfinished device. Ethan felt fatigue yet also a rising fire in his chest. He was closer than ever to creating a true imaging system one that could see deeper than any healer ever had. And he knew once it was finished the world would never be the same.