Under the collective gaze of his grandfather and the Marine's highest-ranking officers, Luffy straightened his back instinctively. A smug grin spread across his face as he prepared to recount his battle with Kaido.

"Well, there's nothing much to say about it, really," he began with feigned modesty that fooled no one. "I just happened to be having a particularly good day, and I accidentally figured out how to use Advanced Conqueror's Haki with my Devil Fruit."

He stretched his arms behind his head casually, as though defeating one of the Four Emperors was hardly worth mentioning.

"Plus, thanks to how I've developed my Goro Goro no Mi, I was able to take down Kaido almost by accident," he concluded with a shrug, seemingly oblivious to the impact of his words.

Hearing Luffy's shameless downplaying of such a monumental achievement, Aokiji was rendered speechless. He exchanged incredulous glances with his fellow Admirals, who seemed equally stunned by the young Marine's casual attitude.

Garp, however, erupted into boisterous laughter. He slammed his palm against Luffy's back with enough force to make the boy spew out all the tea he had just swallowed.

"BWAHAHA! That's my grandson for you!" he bellowed, his voice reverberating throughout the room. "Defeating a Yonko like it's nothing! My blood runs strong in your veins, boy!"

Perhaps carried away by his pride, Garp raised his hand again and delivered another thunderous slap to Luffy's back, nearly sending the young Marine face-first into the coffee table.

"That's enough, you crazy old man!" Luffy protested, wiping tea from his chin. "If you keep hitting me like this, I'll die by your hand instead of Kaido's!"

As he spoke, Luffy made a subtle gesture with his fingers. Instantly, Garp froze mid-motion, his raised hand suspended in the air like a statue. The powerful Vice Admiral was completely immobilized, unable to complete his movement.

Everyone in the room stared in astonishment. Even Sengoku, who thought he'd seen everything in his long career, couldn't hide his surprise.

"Is the Hero of the Marines actually listening when someone tells him to stop?" Kizaru drawled, his perpetual smirk widening slightly. "That would be a first, wouldn't it?"

Amidst everyone's confusion, Garp let out a strange grunt, his expression shifting from jovial to perplexed.

"Huh? I can't move at all," he said, genuine surprise evident in his voice. "What kind of ability is this, Luffy?"

As he spoke, the legendary Marine began channeling his Armament Haki, the skin on his immobilized arm darkening to a glossy black as he attempted to break through whatever force was holding him.

To everyone's amazement, even with his Haki activated, Garp couldn't immediately free himself. It was only when he concentrated more intensely, his face contorting with effort, that he managed to overcome the invisible restraint.

Luffy couldn't suppress a triumphant smile as he watched his grandfather struggle. "That's exactly how I defeated Kaido," he explained proudly. "Even you, Gramps, can't break free without serious effort. Imagine what happens to someone who isn't expecting it."

The room fell silent as the implications sank in. Every Marine officer present understood the significance of what they'd just witnessed.

In theory, all Devil Fruit abilities could be countered with sufficient Haki mastery—especially for someone like Garp, whose Armament Haki was legendary throughout the seas. Normal Devil Fruit effects shouldn't be able to restrain him for even a moment if he was actively resisting.

Yet Luffy's ability had temporarily immobilized one of the strongest men in the world. And judging by the young Marine's relaxed posture, he hadn't even used his full power.

Sengoku, who had some prior knowledge of Luffy's unique development of the Goro Goro no Mi, shook his head in amazement.

"Electricity generating magnetism?" he mused, stroking his goatee thoughtfully. "Luffy, you truly are a genius. This development path has been theorized by hundreds of scientists over the years, but no one has successfully implemented it until now."

Zephyr nodded in agreement, his scarred face showing rare approval for his former student. "Back at the Marine training camp, your theoretical scores were the highest in your class, second only to Ain. Now you're applying that knowledge to develop your Devil Fruit in ways no one has imagined before. You've surpassed even my expectations."

The former Admiral's thoughts went deeper than his two old friends'. Magnetism itself wasn't particularly rare in the world—there was even a notorious pirate who wielded the Jiki Jiki no Mi, granting direct control over magnetic forces.

When it came to pure magnetic manipulation, that fruit should theoretically be more powerful than Luffy's Goro Goro no Mi. Yet in all recorded history, no one had ever developed magnetic abilities to the level Luffy was demonstrating.

This was clearly not ordinary magnetism. Standard magnetic forces couldn't immobilize a human body with such precision, especially one reinforced with Haki.

"The human body's electromagnetic field," Vice Admiral Tsuru said suddenly, her analytical mind piecing together the puzzle. "You've somehow found a way to control the electromagnetic fields generated by living organisms."

Her eyes narrowed as another realization struck her. "And that's how you moved Onigashima away from Wano Country, isn't it? By manipulating the island's magnetic properties on a massive scale."

She leaned forward, her usually stern expression replaced by genuine curiosity. "Luffy, just how far can you extend this ability? What are its limits?"

As expected of the Marines' most brilliant tactical mind, Tsuru had immediately identified the unprecedented nature of Luffy's power. The young Marine turned to her with a respectful nod before flashing a confident thumbs-up.

"Let me put it this way," he stated without a hint of modesty or restraint, his voice filled with absolute conviction. "My ultimate goal is to influence the entire planet beneath our feet. Eventually, I want to make all stop moving under my control!"

The teacup in Aokiji's hand slipped from his fingers, shattering against the floor. No one even noticed the sound.

Ain, Hina, and Kujaku stared at Luffy in stunned silence, their eyes wide with disbelief. He had never shared such ambitious goals with them before. Was this really something any human being could achieve, regardless of talent or Devil Fruit?

The reaction wasn't limited to the younger Marines. Sengoku, Zephyr, and even the three Admirals wore expressions of shock that mirrored each other's.

Each of them had eaten powerful Devil Fruits and spent decades developing their abilities to extraordinary levels. Yet even at their peak, most would struggle to completely destroy a single island.

Meanwhile, Luffy casually declared his intention to control the movement of an entire planet—perhaps even celestial bodies beyond it—as though discussing a minor training goal.

Were they all so limited in their thinking? Or was Luffy simply delusional, making grandiose claims that could never be realized?

The bewildered gathering turned as one to Vice Admiral Tsuru, silently seeking her assessment. As the Marines' foremost strategic mind and most knowledgeable officer on Devil Fruit theory, her opinion carried immense weight.

The elderly Vice Admiral had fallen silent, her sharp mind rapidly analyzing the theoretical possibilities of what Luffy had proposed. Even with her extensive knowledge, she needed only half a second of consideration before decisively shaking her head.

"Impossible," she declared firmly, cutting through the tension in the room. "Even with the most advanced development of electromagnetic manipulation, affecting planetary motion would require energy output beyond anything a human body could generate or control."

Her eyes narrowed as she studied Luffy's confident expression. "Unless..."

A new possibility began forming in her mind, one that made even the legendary Vice Admiral pause. What if Luffy had discovered something about Devil Fruits that no one else had realized in all the centuries since they first appeared in the world?

The gathered Marines waited anxiously for her to continue, unaware that this conversation would soon alter their understanding of Devil Fruit abilities forever.