Isaac Newton in One Piece

The air grew colder as the ship approached the looming presence of Reverse Mountain. The crew stared in awe at the towering currents cascading upward, the chaotic waters defying logic as they were funneled toward the peak.

"Alright, everyone," Isaac said, his voice steady. "We've trained for this. Mira, you're in charge of steering. Just keep the ship steady."

Mira, already gripping the helm, gave him a sharp nod. Her golden eyes gleamed with excitement. "Steady. Got it. Don't worry, Captain—I've got this."

Isaac wasn't entirely convinced. Mira's confidence was infectious, but her recklessness always made him nervous.

As they entered the upward current, the ship lurched violently. The waves roared around them, pulling them upward with a speed that made Isaac's stomach flip.

"Hold on to something!" Nolan shouted, clutching the rail tightly.

Kieran, who was trying to secure the supplies below deck, nearly tumbled over. "Could've used that warning a little earlier!" he yelled.

Mira laughed as she spun the wheel, steering them through the chaotic waters. "This is incredible! Who even thinks to sail up a mountain?"

"Less admiring, more steering!" Isaac barked, bracing himself against the mast.

The ship jolted as it hit a particularly rough patch, the prow slamming against a wave and sending water spraying across the deck. Mira gritted her teeth, her hands firm on the wheel.

"Relax, Captain! I know what I'm doing!" she shouted over the roar of the current.

"You better!" Isaac called back, glancing at the others. Nolan looked pale but focused, while Kieran, soaked from the spray, was muttering something about never cooking in a storm again.

As the ship climbed higher, the wind howled around them. Mira's face was a mix of concentration and exhilaration, her sharp movements steering them narrowly past jagged rocks and whirlpools that would have shredded a less skillfully handled vessel.

"Hang on!" Mira yelled as she yanked the wheel hard to the left, narrowly avoiding a massive wave that threatened to tip them over. The ship groaned under the strain, but it held.

"Reckless!" Nolan shouted. "That was reckless!"

"And it worked, didn't it?" Mira shot back, grinning.

The climb felt endless, the peak of the mountain always just out of reach. Isaac kept his eyes on the horizon, his mind racing. The Reverse Mountain was a challenge unlike any they'd faced so far, but it was also a gateway to the Grand Line—and the start of their real journey.

"We're almost there!" Mira yelled, her voice cracking with effort as she wrestled with the wheel.

The ship surged forward, the final stretch of the current pulling them faster than ever. The peak of the mountain loomed ahead, the waters splitting and cascading down toward the Grand Line on the other side.

"Hold tight!" Mira shouted.

The ship crested the peak of Reverse Mountain, the mighty current pushing them forward, but something unexpected happened. The vessel, in its reckless descent, swerved off course, thrown by an unexpected shift in the water. The ship tilted sharply, throwing the crew to the side as the terrifying drop toward the jagged rocks below became all too real.

"Hold on!" Isaac shouted, his heart racing as he saw the rocks ahead, threatening to shatter the ship.

Mira, panicking, gripped the wheel with all her might. "I can't steer it back! We're gonna—"

Before she could finish, the ship lurched again, a massive wave hitting them broadside, nearly sending them tumbling over the edge of the mountain. The ship spun wildly in the current, teetering dangerously.

Isaac's mind raced,

We can't let this be the end.

The Grand Line was ahead of them, but death loomed if they didn't act quickly. The ship was on the brink, its trajectory way off the course they'd intended. He couldn't just stand by and let them die here. He needed to do something.

In a split second, Isaac acted. He lunged forward, gripping the mast with one hand and slamming his other hand onto the ship's deck. A strange green light flickered from his palm, pulsing as it spread outward, flowing through the wood. The ship seemed to shudder as Isaac focused, his knowledge of physics mixing with his powers. He was using his Devil Fruit, but this was more than just manipulation of inertia—it was a complete recalibration of the ship's movement.

"I'm changing its trajectory!" Isaac shouted, gritting his teeth as his palm glowed brighter.

The green light expanded from his hand, enveloping the entire ship. He could feel the pull of the current, the violent forces at work. With a deep breath, he forced the ship to alter course, using his Devil Fruit ability to manipulate the inertia and momentum in a way he hadn't tried before. It was as though he were shifting the very forces that were pushing them off track, redirecting them with the force of his will.

The ship groaned under the strain, but Isaac held firm. The energy flowing through him and the ship merged as one. Slowly but surely, they began to turn. The tilt of the ship eased, and the frantic swerving slowed to a stop. The current that had almost pulled them to their doom was now redirected, and with one final push, they surged forward on the correct path, narrowly avoiding the jagged rocks.

Mira, breathless and wide-eyed, gripped the wheel tighter. "Isaac… that was—how did you—?"

Isaac stood up slowly, panting, his heart still racing as he wiped sweat from his brow. "That was too close," he muttered, looking back at the others. His body was screaming, his muscles burning from the strain, but he couldn't let up. The danger wasn't over.

Suddenly, a sharp pain shot through his head. He felt the pressure in his temples and his vision blurred for a moment. He tried to shake it off, but as he stood tall, blood began to pour from his nose, splattering onto the deck. The force he had exerted was too much. His body was reacting violently to the overexertion.

Blood leaked from his eyes as well, the red stains staining his vision as the world around him spun. His body couldn't keep up with the sheer force he'd used to change the ship's trajectory.

Nolan's eyes widened in horror. "Isaac!" he shouted, rushing toward him.

Isaac staggered back, holding his hand to his nose and eyes as the blood continued to flow, the strain on his body evident. He gritted his teeth, trying to ignore the pain. "I'm… fine," he managed through clenched teeth. "I just need a moment. Don't worry about me."

Kieran quickly ran to his side, his face pale with concern.

"You've gotta rest, Isaac. You're pushing yourself too hard!" Nolan exclaimed, trying to steady Isaac.

Isaac shook his head, barely able to focus. "We don't have time for rest. We're not safe yet. The Grand Line… it's ahead. I'm fine. Just… need to focus."

He wiped the blood away, his vision still blurry but his determination unwavering. The ship was back on course, but the toll it had taken on him was extreme.

Kieran glanced at the others, a silent understanding passing between them. They had to move forward, but they also needed to take care of Isaac. They couldn't afford to lose him now.

Isaac took a deep breath, his heart pounding in his chest. The ship was no longer veering off course, and the danger had passed, but his body was starting to shut down from the immense strain he had put it under. His Devil Fruit powers had allowed him to manipulate the forces of motion, but even he wasn't invincible.

"I'm fine," he repeated, but this time it was more of a whisper, his voice barely holding together. "Let's get to the Grand Line…"

The crew didn't argue. They helped him sit down, giving him space to recover as the ship steadily moved onward. Isaac knew he had to be careful from now on—he couldn't afford to push himself like that again. The Grand Line was ahead, and they had a long way to go. But with his Devil Fruit abilities, his mind, and the support of his crew, he felt more determined than ever.

The ship steadily began its descent, gliding down the slopes of Reverse Mountain. Isaac, still recovering from his exertion, sat back against the mast, his body aching with the aftereffects of his intense manipulation of motion itself. The others, including Mira, Nolan, and Kieran, kept a watchful eye on the path ahead, their expressions tense, knowing that the Grand Line was no place for the faint of heart. They had passed the first hurdle—the treacherous climb up—but now they were on the brink of entering the chaotic sea that lay beyond.

"Is this it?" Kieran asked, gazing ahead, the swirling waters of the Grand Line coming into view. The horizon seemed different here—darker, more ominous—as if the sea itself was a living entity, unpredictable and dangerous. The wind had picked up, and the ship began to rock slightly, its sails billowing in the gusts.

Isaac, though still weakened, managed a tired but resolute nod. "This is it. The Grand Line."

Mira's eyes widened with excitement, the fear and anxiety from before replaced by the thrill of entering this new world. "So this is the place where all the great pirates go?" she asked, her voice barely able to contain her excitement.

"Yeah," Isaac replied, pushing himself to his feet, his body protesting with every movement. "But it's also the place where danger is at every turn. We need to stay sharp. This is just the beginning."

As they continued their descent, the sea ahead of them became choppier, the currents more intense, pulling them toward the heart of the Grand Line. Isaac's eyes narrowed as he scanned the waters, his mind already racing through possibilities. They needed to be ready for anything. A sudden shift in the wind sent the ship veering slightly, but Mira, with her practiced skill, took control of the wheel, steadying their course.

"I've been on ships before, but this place feels different," Mira said, her hands tightening around the wheel as she fought to keep the ship steady against the waves.

Isaac walked up beside her, his hand brushing against the railing, steadying himself. "The Grand Line's not like any other sea. It doesn't play by normal rules. Every island here is different, and you never know what you're gonna find. That's why it's called the pirate's paradise... and the world's most dangerous sea."

Ahead, the towering cliffs of Reverse Mountain began to recede, and the ship was caught in the shifting currents that would guide them down the final slope. The sound of rushing water filled their ears, the descent swift, almost too fast.

"We're almost there!" Kieran called out, his voice strained against the howling wind.

Isaac clenched his fists, feeling the familiar thrill of danger creeping into his veins. This was where they'd finally be able to test their limits, where they'd make their names known. But just as quickly, his face grew serious. The Grand Line wasn't a place for heroes. It was a place where the strongest thrived, and the weak were crushed underfoot. They would have to prove themselves every step of the way.

"Hold on tight!" Mira shouted, and before anyone could respond, the ship plunged into the whirlpool at the base of Reverse Mountain, the water swirling violently around them, pulling them faster down toward the open sea.

Isaac, gripping the side of the ship, focused all his remaining energy to keep himself steady, but the violent currents were unrelenting. The ship began to spin wildly, and for a moment, Isaac feared they were going to capsize.

Then, without warning, a massive force—something powerful and unseen—shifted the ship's trajectory. Isaac barely had time to react before the ship shot forward, breaking free from the whirlpool's grasp. The turbulent waters of Reverse Mountain finally spat them out onto the calm, wide open sea of the Grand Line.

The crew let out a collective breath of relief as the ship emerged into calmer waters, but the horizon ahead was vast, endless, and filled with uncertainty. Isaac stood tall, his body still weak but his spirit unyielding. They had made it.

"This is it, everyone," Isaac said, his voice firm despite the fatigue. "The Grand Line. We're here, and the real adventure starts now."

They all looked ahead, their hearts full of determination, but also a deep awareness of what lay ahead. They were on the precipice of something much bigger than themselves.