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Standing before Kojou Akatsuki, August couldn't help but feel a twinge of disappointment, even though he had anticipated this outcome.

As the supposed strongest vampire in this world, the current Kojou Akatsuki was, frankly, underwhelming.

Not only had Kojou failed to unlock the full potential of his familiars, but he hadn't even earned their recognition. The so-called Fourth Primogenitor was, at this point, nothing more than a glorified figurehead.

Yet, despite his disappointment, August wasn't about to let this chance encounter go to waste. After all, he had a mission: to defeat Kojou Akatsuki.

The term "defeat" was ambiguous, and it didn't specify whether Kojou needed to be at his peak or in his current half-baked state. With that in mind, August decided to push his luck and see if he could exploit a loophole.

"Let's see if the power of the Fourth Primogenitor that you inherited is truly yours to command," August declared, his voice steady but brimming with authority.

A boom reverberated across the sky.

For the first time since his arrival in this world, August unleashed his own magic.

In an instant, the bright midday sun was swallowed by darkness, transforming the once-vivid sky into the deep hues of night. The scorching sun morphed into a cold, pale moon, hanging ominously above.

August stood at the center of it all, exuding the aura of a ruler of shadows. Behind him, a massive, jet-black gate materialized, faint but unmistakably imposing.

"How is this possible? Turning day into night in an instant? Such a feat… even the Primogenitors shouldn't be capable of this!"

Natsuki Minamiya's voice trembled with disbelief. She stared at August's otherworldly presence, her mind racing to process what she had just witnessed. Relief washed over her as she recalled that she hadn't crossed him earlier. This being wasn't human—he was a monster beyond comprehension.

"Ahhh… damn it, you beasts, settle down already!"

Kojou collapsed to the ground, his body convulsing as he struggled to suppress the surge of energy from within. His familiars were stirring, threatening to break free, and it was all he could do to keep them in check.

August frowned, dissatisfied with the outcome. The whole reason he had unleashed his power was to provoke Kojou's familiars into appearing. To see Kojou holding them back was both unexpected and irritating.

"Familiars of the Fourth Primogenitor, answer my call! Come forth and face me! Show me the power that has earned you the title of the strongest!" August's voice carried a commanding resonance, challenging the very entities lurking within Kojou.

A sharp crack echoed.

Golden lightning flickered across Kojou's body, a sign that he was losing control.

Then, with a thunderous roar, an overwhelming surge of magic exploded outward. A colossal Regulus-Aurum erupted from Kojou's form, its appearance instantly transforming the surrounding area into a domain of crackling electricity.

"So it's you, is it?" August said with a grin, his gaze fixed on the magnificent creature before him. "Regulus-Aurum—fifth of the Fourth Primogenitor's familiars."

The lion, wreathed in radiant lightning, descended from the heavens with an air of majesty. Its crimson eyes glowed with an intense, almost primal brilliance. It had answered August's challenge, breaking free of Kojou's restraints with the aid of its fellow familiars to stand against him.

"Regulus-Aurum, huh?" Natsuki muttered, a mix of awe and exasperation in her voice. "Fifth familiar of the Fourth Primogenitor… and that fool Kojou still can't control it."

Her eyes shifted to Kojou, lying incapacitated on the ground. Disappointment was evident in her gaze. Even as an incomplete Fourth Primogenitor, he should at least have had some control over his familiars. His incompetence was, frankly, pathetic.

Could someone like this truly become the next Fourth Primogenitor?

A thunderous roar tore through the air as Regulus-Aurum charged at August, its body encased in crackling golden lightning that danced wildly around it.

"Good! Regulus-Aurum, let's see just how powerful the familiars of the Fourth Primogenitor truly are!" August declared, his voice ringing with both challenge and anticipation.

Boom!

The collision between August's fist and Regulus-Aurum's massive paw sent shockwaves rippling outward. The sheer force of their clash created a tempest that raged across the battlefield.

"Impossible!" Natsuki Minamiya gasped, watching in disbelief. "He stopped the attack of the Fifth Familiar with just his fist?"

She couldn't comprehend what she was seeing. This wasn't just any familiar—it was Regulus-Aurum, the Fifth Familiar of the Fourth Primogenitor, a creature of immense power.

Meanwhile, August assessed the force behind Regulus-Aurum's blow. Its raw magic and impact confirmed his suspicion: while this familiar was at the Demon King level, it was only at the lower end of that spectrum. This weakness was clearly a reflection of Kojou's current inadequacy as its host.

August pondered briefly. He didn't know the exact rank of a vampire Primogenitor, but from what he had observed, Kojou himself was barely at the threshold of the Demon King level. His familiars, meanwhile, were fully at that level—likely due to their innate nature. If Kojou were at full strength, as a complete Fourth Primogenitor, he would wield twelve Demon King-level familiars.

Such power was terrifying. With twelve familiars of that caliber, the Fourth Primogenitor would be capable of crushing entire nations effortlessly. It was no wonder that the Primogenitors were regarded as monsters on par with weapons of mass destruction.

Crack!

Snapping back to the present, August tightened his grip on Regulus-Aurum's paw. A fissure appeared on the armor-like crest adorning the lion's forehead.

August's strength wasn't something a mere Demon King-level creature could match. He was a Transcendent, existing in an entirely different dimension of power. Just as there was a vast gulf between Demon King-level beings and lesser creatures, the gap between a Transcendent and a Demon King was just as immense.

"Regulus-Aurum is indeed a formidable familiar," August said, his tone calm but cutting. "But it's a pity—you're bound to such a weak host."

Boom!

With a final surge of power, August hurled Regulus-Aurum away. The creature was sent flying, its enormous frame crashing to the ground with a thunderous impact.

Defeating one of the Fourth Primogenitor's familiars with such ease was no small feat, even if this particular Primogenitor was incomplete.

"An eye for an eye," August said, a faint smirk tugging at his lips. "Allow me to return the favor. Grand Cross!"

He swung his arm, and an immense celestial structure materialized in the air—a massive cross, its center glowing like a miniature sun, surrounded by nine orbiting planets. The divine construct shot toward Regulus-Aurum with devastating speed.

Even Natsuki, observing from a distance, shuddered as she felt the magical energy emanating from the attack. "That magic... it's terrifying."

Boom!

The Grand Cross collided with Regulus-Aurum mid-air, triggering a massive explosion that lit up the sky. The familiar roared in pain as the attack overwhelmed it, forcing it to retreat. With a final growl, Regulus-Aurum dissolved into golden particles, returning to Kojou's body.

August stood tall amidst the aftermath, victorious without question. The outcome was decisive.

"How... how could this happen?" Kojou stammered, struggling to comprehend what he had just witnessed. "Regulus-Aurum... it actually lost?"

The other familiars within him, once agitated and restless, now fell silent. The defeat of Regulus-Aurum sent a clear message: their strength was tethered to Kojou's. As their host, Kojou's own weakness severely limited their power. Without drinking blood to fully awaken his potential, Kojou and his familiars were at their weakest.

Tap.

August strode confidently toward Kojou, his presence commanding.

"Hey, w-what are you planning to do?" Kojou stammered, stumbling to his feet now that the familiars had quieted. "I'm warning you, don't come any closer!"

August stopped just short of him, his eyes filled with disappointment. "The Fourth Primogenitor... what a letdown. You're far too weak."

"W-what are you even talking about? I never agreed to fight you!" Kojou protested, his voice tinged with frustration.

"Pathetic," August said coldly, his words cutting deeper than any blade. "For the strongest familiars to serve a master like this... it's a tragedy."

"You've got some nerve!" Kojou snapped, fists clenching. "If you're looking for a fight, you've got one!"

***

Bonus Chapter:

100 Power Stones = 1 BC

300 Power Stones = 2 BC

500 Power Stones = 3 BC

700 Power Stones = 4 BC

1000 Power Stones = 5 BC

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