In an ephemeral moment, the entire expanse rended asunder, emitting a sharp and ear-piercing howl. Parker sensed the approach of several intangible yet razor-sharp blades of wind, an instantaneous transformation crossing his countenance.

He discerned this as the Wind Magic, "Blades of Soaring," capable of cutting through steel and iron with imperceptible swiftness. Disregarding the knight's demeanor, he promptly prostrated himself on the ground as the vacuum blades swept over him, leaving the subsequent wall behind him bifurcated like tofu.

Knight Parker was indeed extraordinary. Though surprised, he remained composed, abruptly embedding his large sword into the ground, chanting, "Source of life, O Earth, unfold your embrace..."

I recognized this as the incantation for the Earth Magic, "Pebble Peak Impact Spear." Curiosity piqued about this knight proficient in magic, a rarity among knights, particularly in the domain of intermediate Earth Magic, I patiently awaited the completion of his protracted incantation.

The incantation finally concluded, and Parker's sword shimmered with concentrated magical energy. With a resounding shout of "Pebble Peak Impact Spear," numerous sharp stone pillars surged from the ground with spear-like precision.

Anticipating this moment, as the earth beneath my feet stirred, I delivered a forceful punch to the ground, proclaiming in a cold voice, "Rend, O Earth. 'Earth-Fissure Explosive Blaze Thrust.'"

This was an advanced Earth Magic, a realm where only Julius among the seven great mages of the Holy Demon Continent could tread. In an instant, the earth quaked, rupturing, and scorching magma, geysers, and flames erupted. The stone pillars from the "Pebble Peak Impact Spear" had long been melted away.

Regrettably, I failed to control the spell's intensity; the surge of magical power caused tremors throughout Airenc City. In moments, the restaurant was engulfed by spouting magma.

Floating above, evading the impending catastrophe, a horrified Parker exclaimed, "Impressive! To wield 'Earth-Fissure Explosive Blaze Thrust' without an incantation and with such potency, even Professor Julius couldn't achieve this feat."

Beside him, Viola sighed softly, stating, "Do you now understand why I intervened? This eccentric's magic, surpassing even my father's capabilities, is coupled with abysmal fundamental knowledge and lacks control. Naturally, such consequences ensued."

Ascending into the sky, witnessing their continued affectionate interaction, my frustration reached its peak. Just as I was about to unleash another powerful spell, Viola flew directly towards me. Disregarding any embarrassment, she threw herself into my arms, whispering in my ear, "Rogue, you've misunderstood. Parker studied magic with my father for three years, akin to my elder brother. He... he only has you in his heart, don't you understand?"

Realizing the magnitude of my blunder, I inwardly cursed. Nonetheless, receiving Viola's confession of love and genuine affection, any embarrassment seemed inconsequential.

Descending to the ground with my cherished one in my arms, I gazed upon the wreckage and magma within the tens of meters radius. I discreetly stuck out my tongue, realizing I may have gone too far.

Approaching me, Parker grinned and remarked, "Junior, your jealousy is truly formidable. Fortunately, Viola chose you; otherwise, Airenc City would have faced calamity."

His jest inadvertently became a grim reality, now chronicled as the "darkest day of Airenc" in the annals.

Due to the immense power of my earlier spell, "Earth-Fissure Explosive Blaze Thrust," Airenc City's military assumed an attack, prompting knights, swordsmen, and magicians to converge.

Coincidentally, among the magician legion was the restaurant owner's brother. Witnessing his brother's establishment reduced to ruins, he erupted in fury. Informed by fleeing patrons that we were the culprits, he chanted a spell, unleashing a "Fireball" towards us.

His attack, seemingly insignificant, misled other magicians into thinking he had detected an enemy assaulting the city. Unwittingly, they joined in the assault with various magical attacks, swarming towards us.

This predicament grew dire. Employing the Holy Light Defensive Magic, "Guardian Canopy," I erected a protective barrier around us. The exploding magical attacks dispersed across the barrier.

Simultaneously bombarded by dozens of magicians, the spectacle was spectacular. Viola, visibly distressed, exclaimed, "What... what should we do?"

Parker shook his head wryly. Using my mental prowess, I conjured the "Hexagram Summoning Array" in the air. A crimson radiance shot forth, and with a blaze, Chirpy the Firebird emerged, showering the sky with countless fireballs.

In the quest to break Princess Elena's blood curse, magicians had been searching tirelessly for the legendary dragon and phoenix. Unbelievably, today, the Fire Phoenix manifested before their eyes, leaving them utterly confounded.

Chirpy's fiery rain forced the magicians into a chaotic retreat, weakening their offensive. I sensed a lightening of the burden.

At this juncture, knights and swordsmen orchestrated a coordinated charge. Given our earlier performance, which seemed the work of a single individual, resisting the collaborative assault of dozens of magicians, coupled with the summoning of the legendary Fire Phoenix, instilled wariness despite our limited number.

The knights' united charge, formidable in itself, prompted Parker, a knight by origin, to tightly grip his sword and shield. Simultaneously, he commenced the incantation of his expertise in Earth Magic. Viola followed suit.

Maintaining the protective barrier, I cast two "Beams of Divine Light" towards them, stating coldly, "These detestable individuals, I shall dispatch them to their ancestral abode with the ultimate prohibition curse."

With those words, my mental command initiated a sudden transformation in the once clear sky. Ominous clouds gathered, fierce winds stirred, heralding the precursor of the ultimate Thunder Magic – "Thunderous Roar."

The reputed potency of this ultimate curse was said to annihilate all in its path. Although Professor Julius was familiar with the incantation, he refrained due to the constraints of his magical power. Having trained in its application, today marked the manifestation of its true might.

Viola exclaimed in distress, "Stop, don't harm them..."

My conscience pricked, yet the unstoppable "Thunderous Roar" descended from the heavens in a split second. Hurriedly exerting my willpower, I diverted its trajectory.

Countless lightning bolts descended, leaving onlookers momentarily blinded, followed by an earsplitting cacophony.

Reinforcing the magical power of the "Guardian Canopy," I withstood the flying debris and air currents. Viola, in a soft collapse within my embrace, her lovely eyes tightly shut. Parker, too, gazed at the staggering spectacle, his visage almost disbelieving.

After a considerable time, Airenc City finally settled into an eerie calm. Aghast at the sight before me, I couldn't help but be dumbfounded: nearly half of the city's dwellings lay in ruins, the streets resembling a chaotic mosaic with fallen magicians, knights, swordsmen, warhorses, and more. Fortunately, it seemed they were merely injured by the shockwave and not directly struck down by the "Thunderous Roar."

How fortunate, how fortunate, all thanks to Viola's timely reminder.

Parker exclaimed in horror, "Heavens, is this truly your doing? Junior, you are indeed a harbinger of destruction."

Henceforth, I acquired my first moniker upon reaching the Holy Demon Continent – "The Harbinger of Destruction in Airenc." Swiftly, this epithet spread across the entire continent, striking more fear into people's hearts than even demons.