One Piece : Prince of Charlotte Family

"Buzz... buzz..." 

The Tenseiga Sword trembled violently before me. 

Its green glow grew brighter and brighter, radiating an intense, eerie light. 

It seemed to be struggling, trying to break free, resisting with all its might. 

"What!?" 

As time passed, under the stunned gazes of the witch Maggie and the villagers, 

"Zzzzt... zzzzt..." Wisps of lightning crackled and flickered, coiling around the sword's razor-sharp blade. 

The sight was unsettling, carrying an ominous energy. The Tenseiga Sword, surrounded by its green aura, slowly stopped thrashing. 

The sinister, chilling atmosphere it emitted was completely suppressed. 

"Roarrr—!" 

In the next instant— 

Wilhelm, who had just forcefully subdued the Tenseiga Sword, let out a deafening roar toward the sky. 

The sound was not human; it was a beastly cry that sent shivers down everyone's spine. 

The people of Asuka Island stood frozen, wide-eyed, their expressions shifting to panic and terror. 

"It's... it's a monster!!!" 

The more fearful among them turned pale and staggered backward, retreating in fright. 

Some tripped and fell, injuring themselves as they scrambled away, stumbling and crawling in desperation. 

"Zzzt... zzzt..." 

In the blink of an eye— 

Wilhelm's silver-white hair began to whip wildly in the air, crackling with electric currents weaving through the strands. 

"Swish—" 

Before their eyes, his body started to transform at a speed visible to all. 

His golden, hawk-like eyes turned scarlet in an instant, radiating an aura of savagery and bloodlust. 

His expression grew fierce, his ears sharpened, and two long, razor-sharp fangs emerged, gleaming menacingly. 

Wilhelm's already muscular frame expanded further, his height shooting up. 

Though he had still been young, standing just over two meters tall, his figure now towered at more than three meters. 

Electric light danced around him, his presence growing unbearably violent, radiating raw, destructive power. 

A snow-white tail suddenly emerged from behind Wilhelm.

In the blink of an eye, it grew larger, its fur becoming fluffier and finer, swaying gracefully in the wind.

His hands transformed into claws, resembling those of a wild beast. The already sharp nails became narrower, longer, and more menacing, glinting with a cold, deadly light.

Wilhelm stood there—half-man, half-beast—radiating a mix of cruelty, ferocity, and an eerie, regal aura.

The atmosphere was suffocating, sending chills down the spine of anyone watching.

"Zzzzt..."

The dazzling electric light flashed continuously.

The Tenseiga Sword seemed to come alive, whirling wildly in his grasp as its terrifying power surged.

A sinister, overwhelming energy radiated from it. The sword's malevolent force, combined with the violent electricity pouring out, intertwined and began to take form, as though becoming solid.

Crack... crack...

The ground beneath Wilhelm split and caved in under the immense pressure of his aura.

Rocks and debris trembled, shaking violently before rising into the air one after another.

"Roarrr—!"

A deafening roar echoed.

Out of the crackling energy, a massive blue dragon with a green hue and an awe-inspiring presence materialized.

"Zzzt... zzzt..."

The dragon, surrounded by dazzling electric light, appeared almost alive, its sharp fangs bared and claws striking fear into all who beheld it.

The enormous, electrified dragon coiled protectively around Wilhelm, exuding a ferocity that was unstoppable.

The sight was utterly breathtaking and filled everyone with awe.

"Profound Truth: Azure Dragon Strike!"

Boom!

In an instant, the earth quaked violently, the ground shattered, and a thunderous roar filled the air.

Smoke and dust erupted, rising high and spreading across the battlefield.

The devastation was so immense that it obscured everything in front of them.

"Gulp..."

"That... that's..."

"The lake… it's gone!"

"Could this be… the power of a god!?"

For a long time, silence reigned as the unimaginable destruction settled.

The smoke and dust gradually cleared, revealing the aftermath of the destruction. 

Maggie, the witch of Asuka Island, stood frozen, her eyes wide with shock, her expression blank. 

The tribal residents were no different. They stared in disbelief, their mouths agape, unable to process what they were seeing. 

Cold sweat dripped from their faces as panic set in. 

At the foot of the shattered mountain, where a clear, expansive lake and a lush forest once thrived, nothing remained. 

It was all gone—reduced to rubble, flattened into desolate ruins. 

The devastation was beyond words. 

"Fingry, let's go!" 

At some point amidst the chaos, Wilhelm had reverted to his original form. 

The fierce moon lion transformation faded, revealing once more the appearance of a strikingly handsome young man. 

As a hybrid born from the union of Big Mom and a member of the Mink Tribe, Wilhelm had inherited the monstrous strength of Charlotte Linlin and the natural abilities of the Minks. 

Not only did he possess the raw power of Linlin's lineage, but he also mastered the Mink Tribe's ancient technique of generating electricity. 

Unlike ordinary Minks, who require the sight of a full moon to awaken their primal instincts and unleash their "Sulong" transformation, Wilhelm could transform into a moon lion at will, without relying on the lunar cycle. 

Through years of relentless training, he had perfected this ability, allowing him to harness the power of the moon lion without succumbing to its mindless wildness. 

When Wilhelm transformed, he unlocked his full potential. 

His physical abilities increased exponentially, his body surged with greater amounts of electricity, and his combat strength soared to astonishing levels. 

Even his mastery of Haki grew stronger during this transformation, amplifying his already fearsome prowess. 

In essence, Wilhelm's very bloodline was akin to the power of a Mythical Zoan Devil Fruit. 

However, this transformation came with a cost. 

Staying in his moon lion form for too long drained a tremendous amount of energy. 

If he didn't release the transformation in time, his body would begin consuming his vitality, potentially leading to fatal consequences. 

For most Minks, the Sulong form is dangerous without extensive training. 

Unprepared individuals often lose themselves to the primal instincts locked within their blood, becoming uncontrollable beasts that fight relentlessly, eventually exhausting their life force and dying of sheer overexertion. 

Wilhelm, however, had surpassed these limits through discipline, mastering the power of his moon lion form while keeping his mind intact. 

Yet, even he was not invincible. Every transformation carried its risks, a reminder of the thin line between power and destruction.