Building The First Adventurer Guild In Another World-Chapter 180: Soul Expansion

Sage stood alone in the vault for a moment after the system’s light faded. The golden glow of stacked coins flickered in his eyes as two rewards hovered before him, waiting patiently.

The High-Grade Soul Expansion Potion shimmered gently in its crystal vial, its liquid neither fully silver nor blue, as if light itself had been captured and contained within glass.

Next to it rested the Mage Staff, quiet yet undeniably present. Its runes pulsed faintly in response to Sage’s proximity not aggressively, but with a restrained resonance, like a heartbeat syncing with another.

For several seconds, no... minutes, Sage simply stared. It wasn’t that he was stunned by wealth or intoxicated by power , it was something deeper.

He let out a slow breath and chuckled softly to himself while shaking his head slightly.

"It’s been a while," he murmured, his voice echoing softly off the runed stone walls. "Since you gave me something that actually mattered."

As always, the system remained silent.

His thoughts drifted back involuntarily to earlier days, absurd rewards that seemed more like mockery than help, bags of chips with no purpose beyond novelty, clothing devoid of enchantment, items that reminded him how sharp the system’s sense of humor could be compared to his own. Useful items did come eventually, yes, but rarely anything that spoke directly to him.

But this was different. He raised his hand and summoned translucent blue holographic screens into existence before him, layered and crisp, with their light reflecting against the gold-stacked walls of the vault.

[High-Grade Soul Expansion Potion: Permanently expands and reinforces the user’s Soul Vessel. Increases soul capacity, enhances mental endurance, and reduces Spell Casting Instability.]

Sage’s gaze lingered on the information as he furrowed his brow slightly to absorb every word.

In this world, "Soul Vessel" wasn’t just an abstract concept relegated to philosophers or priests, it was tangible and measurable. For warriors, it anchored willpower and sharpened instincts during combat. For knights, it supported discipline and technique execution.

But for mages? The soul was everything.

Mana didn’t originate from the body not truly. The body merely acted as a conduit, a framework of veins and flesh guiding energy but the soul served as the reservoir, the interpreter, the command center shaping raw mana into coherent spells.

Spells weren’t cast by muscles; they were imposed by the soul itself. A mage with insufficient soul capacity could accumulate endless mana yet still collapse when attempting complex spells.

Conversely, even a mage with vast soul capacity but limited mana could perform miracles through sheer control alone.

The soul determined how many spell constructs could be maintained simultaneously how complex a magic circle could be formed without collapsing and how finely mana could be woven into threads instead of relying on brute force.

And expanding it? That was not just rare; it was downright obscene. Sage swallowed hard, his mind racing. Even in bustling cities, whispers of soul-enhancement consumables circulated cautiously, hoarded by noble families and secretive arcane organizations.

The lowest-grade versions alone commanded prices in the hundreds of thousands of gold coins, and even then, their effects were often fleeting or marginal at best.

But this one, this was a High-Grade Soul Expansion Potion with permanent effects.

His gaze shifted to the second holographic panel as he dismissed the first.

[Silver-Grade Mage Staff: amplifies spell stability, reduces mana loss during casting, enhances spell formation speed, and acts as an external mana harmonizer. It increases casting range, improves spell responsiveness, and mitigates backlash during failed constructs.]

A mage staff isn’t a weapon in the traditional sense; it’s more like a focus, a partner and an extension of the soul.

Sage exhaled slowly and dismissed the screens. While wielding a mage staff wasn’t mandatory, every true mage eventually found one indispensable. Unlike swords or spears that dealt damage directly, staffs existed to ease the mental burden of spellcasting. They stabilized volatile mana flows and served as intermediaries between the soul and reality.

Inexperienced mages often relied on sheer willpower to tear spells into existence through brute mental force. That approach could work... until it didn’t. When backlash struck, it could cripple souls or shatter mana pools, sometimes leaving mages permanently scarred. A proper staff prevented such disasters, it promised longevity in practice.

Sage glanced once more at the potion hovering before him before carefully storing both rewards away. The vault sealed itself behind him as he exited.

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The Guildmaster’s bedroom on the third floor bore little resemblance to the modest quarters he had once occupied.

As soon as Sage stepped inside, soft mana-infused lamps activated automatically, filling the room with warm ambient light. The polished marble floors reflected this glow faintly, their surfaces smooth enough to mirror his movements. Floor-to-ceiling windows dominated one side of the room; velvet curtains were drawn partially aside to reveal Greyvale City sprawling beneath a starry night sky.

At the center sat a massive bed draped in dark linens embroidered with subtle runic patterns designed to regulate ambient mana density. A broad wardrobe made of polished oak lined one wall, its interior enchanted for spatial efficiency. Above him hung a crystal chandelier that caught and refracted light in gentle waves across the room.

Luxury? Yes but restrained luxury.

Sage changed quickly into loose pajamas after discarding his formal attire; his hair still damp from a quick rinse. He lowered himself to sit cross-legged on the floor at the center of the room, spine straight and breathing slow and measured.

In his hand, the vial of Soul Expansion Potion glimmered softly, a delicate promise wrapped in danger.

This was not something to be taken lightly. Enhancing one’s soul carried significant risks, as damage to it could linger far longer than any physical wound. Overextending oneself could lead to madness, memory loss, or even worse, fractured consciousness.

Sage stared at the vial, an unsettling feeling gnawing at the edges of his mind. A strange instinct urged him to wait, to store it away for another time.

He frowned slightly, that hesitation made no logical sense. His soul foundation was stable, his system-enhanced constitution stronger than average, and his mana pool well balanced.

And yet... something about the potion felt final, as if he were standing on the brink of a threshold.

After a long moment of contemplation, Sage shook his head. "If I keep hesitating," he murmured to himself, "I’ll never move forward."

With determination, he uncorked the vial and drank deeply. The liquid slid down smoothly, cool at first, then warming into a wave of pain.

Not sharp or violent but expansive, like something stretching beyond its limits. Sage’s breath hitched as the sensation radiated outward from deep within him rather than from any physical organ.

His soul, usually silent and imperceptible, suddenly came alive. He felt it swell and unfold like compressed space being forced open. Invisible barriers crumbled as energy surged in; mana flowed from the environment toward him without conscious intent, swirling around his body in spirals.

The room responded dramatically. Wind stirred up dust motes; curtains billowed despite closed windows. Heat shimmered faintly along the marble floor while arcs of static crackled briefly through the air before dissipating harmlessly as mana threaded itself into Sage’s veins.

His Mana Veins flared to life beneath his skin as energy coursed through them, instinctively guided toward his Mana Pool, which churned violently before settling at a higher density than ever before.

Sage clenched his fists and gritted his teeth, sweat forming on his brow as he rode out the overwhelming sensation without losing focus.

Time stretched oddly; minutes blurred into an indistinct haze as Sage’s soul expanded and adjusted to this newfound influx rather than collapsing under its weight.

When it finally subsided, silence enveloped the room, a thick blanket of stillness.

Sage opened his eyes to a world that seemed sharper and brighter than before. He could now feel mana around him not just an abstract concept but a vibrant presence flowing like currents through everything: the room itself, the walls surrounding him, even extending out into the city beyond.

His breathing deepened and steadied; it felt as if he were drawing in not just air but something far more fundamental.

A smile slowly spread across his face.

He had broken through, he was now a 3-Star Apprentice Mage!

A thrill coursed through him as the realization hit. Mana responded eagerly when he lifted his hand, and without a moment’s hesitation, he instinctively formed a spell. There was no incantation, no delay, a magic circle sprang to life before him, clean, precise, its runes perfectly aligned.

He let out a soft laugh, wonder lacing his voice.

"So this is what it feels like..."

One spell followed another, each one forming faster than the last. The mana consumption was minimal, and his control felt absolute. It was effortless, almost second nature.

Sage stood up, heart racing, and picked up the Mage Staff. The instant he grasped it, he felt the connection solidify.

Mana flowed through him seamlessly, amplified yet contained, power channeled with surgical precision. Standing there with the staff in hand and his soul awakened, Sage felt as if he could pierce the very sky itself.