My Ultimate Sign-in System Made Me Invincible Chapter 645 Third Transcendent Stage

The transition out of Tiamat's domain was a sudden, violent shift.

The heavy darkness of the void tore apart, and Liam felt his consciousness plunge through an infinite sequence of spatial layers.

Blinding light and raw energy blurred around him, and the silent throne room vanished, replaced by a massive roar that echoed deep within him.

When his feet touched solid ground once more, the noise stopped completely.

Liam opened his eyes. He was standing at the center of an ancient stone platform, its surface worn smooth over uncounted eons and carved with deep, geometric patterns. Beyond the platform, a vast, borderless cavern expanded without walls or a ceiling.

This was the Dragon Realm.

The air was thick and shimmering with a heavy, iridescent fog that swirled in slow, lazy currents. The pressure of the atmosphere was immense, carrying a physical weight that would have instantly crushed a lesser cultivator. Every breath felt thick with energy, flooding his chest before surging into his body.

Liam stood perfectly still, his hands in his pockets, calmly taking his bearings. He could feel his twelve-circle mana heart beating intensely, rapidly refining the massive amounts of mana and qi that flooded his body every second.

Tiamat had been right about the spatial fractures. Looking through the fog, his sight easily separated the mixture into its core parts.

He could see the sharp, crystalline threads of spirit qi, immortal qi, and various other energies—far more potent than anything found in the holy lands of the Cultivation Universe. Intertwined perfectly with the qi were fluid, vibrant currents of extremely pure mana, bleeding continuously through invisible fractures from the neighboring Mana Universe.

Both forces were running at maximum capacity, completely saturating the environment.

Then, right on cue, the system connected him spatially to a part of the Dark Energy Universe that was filled with incredibly dense dark energy.

Directly above his head, the empty space began to distort, rippling like the surface of a disturbed pond. A dense, pitch-black strand of energy began to pour downward, pulled directly across the void from his home universe.

The black current did not disperse. Guided by the system, it stabilized into a perfectly contained vortex around the stone platform, forming an artificial atmosphere that isolated him from the rest of the realm.

Liam watched the three distinct forces converge. The crystalline qi, the fluid mana, and the unyielding dark energy began to revolve in a massive, three-colored cyclone, creating a low, intense hum that vibrated through the stone floor.

With everything ready, it was time to begin cultivating. To bridge the gap between a Loose Immortal and the next stage of power, he had to understand the rules governing this structure. He had to become an architect.

"Master the laws," Liam muttered to himself, his voice steady against the roaring cyclone.

He sat down at the exact center of the platform, crossing his legs and resting his wrists on his knees. With a single thought, he released his aura. His Primordial Essence surged through his meridians like a raging river, creating a sudden, powerful vacuum that reached out into the environment.

The response from the cyclone was instantaneous.

Swirling currents of energy slammed into his body from all directions, entering through his pores and acupoints in a torrential downpour.

The influx was massive and violent, tightening his muscles under the strain. The mana expanded his pathways, the qi pressed into his meridians, and the dark energy sought to compress his physical form.

In any standard cultivator or mage, introducing three incompatible, maximum-capacity forces into a single body at the same time would have caused an immediate explosion, reducing their body and soul to nothing.

But Liam's unique cultivation was built specifically to handle the friction.

Under the continuous refinement of his twelve-circle mana heart, the crystalline qi, the fluid mana, and the heavy dark energy were systematically stripped of their regional limitations and converted into the perfectly neutral, golden liquid of his Primordial Essence.

As the new essence poured back into his system, filling his reservoir, Liam expanded his spiritual sense outward. He didn't focus on the sheer volume of the power; he focused on the underlying mechanics of how the energies interacted at the boundary where they met.

He began the long, silent work of analyzing the laws of reality.

***

The first month of his seclusion passed in absolute stillness. Inside the enclosed vortex of the stone platform, the concept of day and night didn't exist.

Liam's consciousness detached from his physical body, sinking deep into the foundational layers of the space. He observed the friction.

When the spirit qi collided with the mana, they resisted each other. The qi attempted to impose order, seeking to anchor itself to a defined structure.

The mana fought back with fluid adaptability, constantly shifting to bypass those rigid constraints. And wrapped around both of them was the uncultivated dark energy, acting as a crushing weight that forced the two active elements into proximity, absorbing the residual heat of their incompatibility.

Liam analyzed the interactions clearly. He began to see that a cosmic law wasn't a separate, external entity that governed reality. A law was simply the repeatable baseline logic created when contrasting forces reached a state of dynamic balance.

By the second month, his progress toward comprehension began to take a defined shape. His mind locked onto a single, fundamental concept that sat at the core of his unique cultivation system: *Integration.*

The old law gears built by the previous creators were failing because they were designed using only the laws of two universes, leaving the third separated and locked away like a garbage disposal. Because the modules were segregated, the waste had eventually backed up, creating a feedback loop that threatened his home world.

To build a gear that lasted, the framework couldn't be modular. It had to be unified.

Liam focused his entire spiritual sense on his core, watching the three elements fuse into Primordial Essence.

The process was flawless because it didn't force the energies to destroy each other; it stripped away their incompatibility, allowing them to occupy the same space without conflict.

That was the key. The core law he needed to master wasn't fire, space, or destruction.

It was the Law of Universal Consonance—the logic of absolute integration.

The moment this understanding solidified in his mind, the silent atmosphere inside the sanctuary shifted violently.

Deep within his spiritual space, the pale jade token from Tiamat cracked, dissolving into a brilliant, gold liquid that poured directly into his soul. Simultaneously, the lock on his interface shattered.

The restriction on his automated progression was lifted, and the system executed its accumulated reserves with terrifying speed.

A massive, golden pillar of pure, refined energy erupted from the stone platform, shooting straight up into the borderless expanse of the cavern. The three-colored cyclone was violently dragged into his chest, the sheer volume of the influx turning the air into a roaring vacuum.

Liam remained seated, his eyes snapping open. His pupils transformed, glowing with a serene, multi-colored brilliance that reflected the fusion of the three universes.

His meridians expanded, shifting to a dense, crystalline gold that could handle the massive throughput. His reservoir of Primordial Essence rose exponentially, filling his dantian until the liquid compressed under its own weight into a solid ocean of power.

The barrier separating the Second Transcendent Stage from the third manifested in his spiritual space as a massive, unyielding wall of cosmic laws.

Liam didn't try to chip away at it. Guided by his new comprehension, he gathered the entirety of his newly refined Primordial Essence, aligned it perfectly with the Law of Universal Consonance, and drove it forward like a solid battering ram.

The law barrier didn't shatter or resist. Because his essence carried the neutral, sovereign framework of all three universes, the barrier simply recognized him as the legitimate authority and dissolved into his system.

A powerful, silent shockwave rippled outward from his body, flattening the iridescent fog across the entire realm. The stone platform beneath him groaned under the sudden, immense weight of his presence.

He had crossed the threshold.

Liam let out a long, slow breath, the golden light in his eyes gradually receding until his pupils returned to their normal depth. He stood up from the center of the platform, naked.

He felt an unprecedented sense of absolute clarity, lightness, and total control. His main body was now fundamentally attuned to the fabric of reality across all three worlds.

Liam looked up at the vast, borderless cavern of the Dragon Realm, then down at his hands. He could feel the solid, condensed ocean of Primordial Essence resting quietly within his dantian, completely responsive to his will. He was no longer just an anomaly hiding in the dark.

He had the strength, the framework, and the structural comprehension required to begin the real work. He was now ready.

He was in the third stage. And the forge was finally ready for his hammer.