Rimuru : Journey with Straw Hat

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As they docked and disembarked, Luffy's eyes sparkled with excitement.

"I can't wait to see what kind of food they have here!"

he exclaimed, his stomach growling in agreement. Nami rolled her eyes, but her curiosity piqued as she began to survey the area.

The island was a bizarre spectacle of half-melted ice and sweltering flames, a testament to the clash that had once engulfed it.

Chopper, ever the curious doctor, began examining the flora and fauna, fascinated by the unique wildlife that adapted to such extreme conditions. Meanwhile, Zoro kept a watchful eye, sensing that they were not alone.

Suddenly, they spotted a figure in the distance, standing tall and confident. It was Trafalgar D. Water Law, the Captain of the Heart Pirates.

---

He had been conducting his own investigations on Punk Hazard, searching for information on the mysterious Smile fruits and the infamous Caesar Clown.

"Straw Hat," Law greeted, his voice calm but serious.

"What brings you here?"

"We're just exploring! What about you?" Luffy replied, grinning widely.

"Business. There's something going on here that's worth investigating," Law replied, his gaze shifting towards the smoke rising from within the island.

"And it's not just the weather."

As the crew began to discuss their plans, a piercing shout echoed through the air.

"Hey! Stop right there!" A figure appeared, rushing towards them. It was Tashigi, the Marine officer known for her fierce dedication to justice and her keen swordsmanship.

Behind her, a group of Marines followed, ready to apprehend the Straw Hats.

"Luffy! We should probably leave..." Nami started, but Luffy was already waving enthusiastically.

"Tashigi! It's been a while! I last saw you on Marineford" he called out, ignoring Nami's warning. Tashigi, surprised but unfazed, approached cautiously.

"Straw hat Luffy, what are you doing here? This is a restricted area!" she said, trying to keep her composure.

"Exploring! And we met Law too!" Luffy pointed at the Heart Pirate Captain, who shrugged nonchalantly.

---

Tashigi's gaze shifted between the two pirate crews, understanding the potential chaos that could ensue.

Before a confrontation could break out, a sudden explosion rocked the area, sending smoke and debris flying.

A figure emerged from the clouds, laughter echoing ominously. It was Caesar Clown, the mad scientist responsible for the chaos on Punk Hazard.

"Fools! You've walked right into my playground! I will capture you all just like I capture smoker," Caesar cackled, his eyes wide with madness.

"Welcome to my laboratory!"

Realizing the danger, Law and Tashigi exchanged glances, both understanding that they needed to cooperate to deal with the threat.

---

"We need to work together," Law suggested, looking at Tashigi.

"Agreed," she replied. "We can't let him escape again."

Luffy's eyes sparkled with excitement. "Okay! Let's do this!"

With a plan forming, they charged towards Caesar's lab, navigating through the treacherous terrain of ice and fire. As they approached, they encountered a series of bizarre creatures, mutated by Caesar's experiments.

---

The Straw Hats showcased their teamwork, with Zoro slicing through enemies, Nami using her weather powers, and Sanji delivering powerful kicks.

Inside the lab, they found a shocking sight: children held captive, victims of Caesar's cruel experiments. Luffy's expression hardened, and he declared,

Law, using his Ope Ope no Mi powers, created a safe path for the Straw Hats to navigate through the chaos while Tashigi engaged the remaining Marines, trying to hold them back. The group fought valiantly, overcoming Caesar's grotesque creations and rescuing the children.

---

Just as they thought they had the upper hand, Caesar unleashed a massive explosion, threatening to take them all down. But at that moment, Law activated his Room, manipulating space and time to shield his allies.

"Get the kids out of here!" he shouted.

Monet try to stop them but in this scene she was cut in half by Zoro with haki * I mean she is dead *

With Luffy leading the charge, they managed to escape the lab just in time, and the children were safely rescued.

Tashigi, though initially conflicted about working alongside pirates, recognized the good they had done.

---

As they regrouped outside, the island trembled beneath their feet. Caesar, furious and desperate, launched a final attack, but the combined strength of Luffy, Law, and Tashigi proved formidable.

With a final strike, Luffy unleashed his Gear Second, knocking Caesar out cold.

With the threat neutralized, Tashigi stood among the Straw Hats, a mix of admiration and disbelief on her face.

"I can't believe we worked together," she admitted, a hint of a smile breaking through her stern demeanour.

"Yeah! That was awesome, but where is Smokey?!" Luffy cheered, fist-pumping in the air.

Law smirked, "Perhaps this island has more surprises than we anticipated."

As they prepared to leave Punk Hazard, Luffy turned to Tashigi.

"Next time, let's have a proper battle! And Captain Smoker is captured by Vergo!"

And again Tashigi chuckled, shaking her head.

"I'll hold you to that, Straw Hat. But promise me You will help Captain Somker to escape"

With their mission accomplished and new allies forged, the Straw Hat Pirates set sail once more, As the island faded into the horizon, Luffy's laughter echoed across the sea, a testament to their unyielding spirit and the adventures yet to come.

---

As the Straw Hat Pirates explored Punk Hazard, Rimuru Tempest, decided to investigate, intrigued by the possibility of new allies and adventures.

Rimuru materialized on the shores of Punk Hazard just as Luffy and his crew were encountering Trafalgar Law and Tashigi.

His arrival went unnoticed at first, as he was busy observing the chaotic environment and the strange creatures roaming the island. With his usual nonchalance, Rimuru utilized his ability to blend into the surroundings, studying the scene while contemplating the unique situation unfolding before him.

---

When the explosion from Caesar Clown's lab shook the island, Rimuru's curiosity peaked. Sensing the distress of the children trapped inside, he decided it was time to reveal himself. With a flash, he transformed, taking on his humanoid form, complete with his signature blue hair and confident demeanor.

Emerging from the shadows, Rimuru caught the attention of both the Straw Hats and Tashigi & somker.

"Looks like I arrived just in time for a party," he said, flashing a friendly smile.

"What's going on here?"

Luffy, always eager to make new friends, grinned back.

"We're fighting this crazy scientist! Want to join? "

"Of course! I can't let you have all the fun," Rimuru replied, his excitement palpable. He quickly assessed the situation and introduced himself to the crew, explaining his background and his interest in helping those in need.

---

As they battled Caesar's grotesque creations together, Rimuru showcased his incredible abilities, using skills like Predator to absorb and neutralize threats while healing the injured children trapped in the lab.

The combination of Luffy's brute strength, Law's strategic mind, Tashigi's swordsmanship, and Rimuru's versatility turned the tide against Caesar.

---

During the fight, Rimuru also took the opportunity to forge a connection with Chopper, discussing healing techniques and sharing knowledge about magical creatures.

Chopper was fascinated by Rimuru's unique abilities and found a kindred spirit in the slime.

After defeating Caesar and rescuing the children, Rimuru stood alongside Luffy, Law, and Tashigi as they surveyed the chaotic aftermath.

"You all did great! It's nice to see such teamwork," he praised, his eyes gleaming with admiration.

With the immediate threat gone, Rimuru suggested they work together to ensure the children were safely returned to their families, and the group agreed, solidifying their newfound alliance.

As they prepared to leave Punk Hazard, Rimuru felt a sense of camaraderie with the Straw Hat Pirates and a desire to join them on their adventures.

"Hey, Straw Hat!" Rimuru called out as they boarded the Thousand Sunny.

"Mind if I tag along for a while? I could use some new friends and experiences!"

Luffy's eyes lit up with excitement.

"Absolutely! The more, the merrier!"

With the help of Rimuru, Rimuru goes for vergo and defeat him. And help somker to let free .

---

Somker didn't recognize him because he don't knew who rimuru was.

Just like that somker join party with Strawhat and give food to kids , and meet Tashigi!

And they take every kid's along side with them .

---

Few Note

1. I didn't add the body swap part because I'm not sure how the story will progress-it feels like it's happening automatically.

2. About the Monet part: yes, I shortened it on purpose because it was very long.

3. For the Smoker part, I apologize.

4. Rimuru and Robin are the most intelligent members of the crew. However, Rimuru can't read the Road Poneglyph.

// Hope u enjoyed \\