Luffy Twin Brother: The Monkey King

Under everyone's shocked gazes, Robin read the ancient text aloud, revealing a startling truth—hidden within the world was a weapon capable of unparalleled destruction, something called Poseidon. But that wasn't all.

Next to the Poneglyph, carved into the stone, was a message left behind by none other than Gol D. Roger.

Robin's eyes lingered on the inscription before she spoke. "This confirms it… the Poneglyphs aren't just scattered records of history. They're a map—one leading to the location of the true Poneglyphs."

A heavy silence followed as the weight of her words sank in. The missing history of the world wasn't just hidden; it was waiting to be found.

"Poseidon? It should be related to Fishman Island…" Kong muttered to himself, making a mental note to head there someday. At the same time, he committed every word Robin spoke to memory, ensuring he could study it later on his own.

But for now, there was only one thing left to do.

With the war between the Skypieans and the Shandorans finally over, both sides stepped forward, united for the first time in centuries. Together, they struck the golden bell, its deep, resonant chime echoing across the sky. The sound carried far beyond the clouds, marking the moment their long-standing conflict came to an end.

From the Blue Sea below, Cricket and his friends looked up, eyes wide as the distant ringing of the bell reached them, proof that the city of gold had truly existed.

"Beautiful," Robin said softly, listening to the deep, resonant chime of the bell. It wasn't just the sound—it was the history behind it, the centuries of conflict and struggle finally coming to an end with that single, powerful ring. The bell's echo traveled far and wide, carrying through all of Skypiea and even reaching the Blue Sea below, where Cricket stood on Jaya Island, looking up toward the sky in awe.

"Thanks," Kong said with a smirk as if Robin's words were meant for him.

Robin turned to him, expression unreadable, before sighing and shaking her head. Instead of engaging, she chose to ignore him entirely, letting the moment speak for itself.

As the night stretched on, the celebration continued in full force. The rhythmic pounding of drums mixed with the crackling of the bonfire, casting flickering shadows over the gathered crowd. Skypieans and Shandians, once bitter enemies, danced side by side, their laughter carrying through the warm night air. 

Even Enel, in an unexpected turn, was part of the festivities, accepted, albeit cautiously, thanks to his apology and the influence of Luffy and his crew.

Robin sat quietly on the sidelines, watching the revelry with a faint, unreadable expression. The firelight reflected in her eyes as she took in the sight of Kong, moving among the dancers with ease, his energy seemingly endless.

Eventually, Kong made his way back to her. He dropped into the spot beside her, exhaling as he did.

Robin glanced at him. "Are you done partying?" she asked, her voice even.

"I decided not to party without you," Kong said, his tone casual and light.

Robin paused, her expression unreadable as she turned to look at him. The firelight flickered across her face, but her eyes held something indecipherable.

"Since we're going our separate ways soon, I should ensure you have all the knowledge you need," she said, her voice steady. Without another word, she turned and started walking toward the ship.

Kong blinked, momentarily caught off guard by how abruptly she moved. With a sigh, he shook his head before following after her, falling into step behind her as the sounds of celebration faded into the distance.

"Where do you think the Skypieans came from? Don't you find it weird that they and the Shandians both have wings?" Kong asked, his hands resting behind his head.

"Are you saying they are the same race?" Robin asked, raising an eyebrow.

"Yeah. I mean, Sky Island is right above where the island was knocked into the sky from. We also have the fact that they seem to view the moon in a strange way… my theory is that they're aliens," Kong said with a smile.

"More like you just want them to be aliens so you have more to explore," Robin said, seeing right through him. Kong let out an awkward laugh.

"You got a better theory?" he asked with a grin.

Robin shook her head slightly. She wasn't sure if his theory was correct, but she couldn't dismiss it either. Looking up at the night sky, she wondered what mysteries it held and if any of them were tied to the Void Century.

Before long, they reached the boat, where Robin pulled out a few books and began writing notes while teaching Kong. To her surprise, he was a natural. He grasped concepts instantly, absorbing everything the first time around. In no time, he was reading at a first-grade level, and his improvement only accelerated.

"You're learning speed is truly shocking," Robin said softly.

"Maybe it's because I have such a wonderful teacher," Kong said with a smile, making Robin pause, her expression difficult to read.

"Teacher, I've always been curious about your eyes… they're beautiful," Kong said lightly, his gaze locked onto hers as he slowly leaned in.

Robin's lips parted slightly, her breath hitching as Kong's face neared hers, their eyes meeting in the dim light. For a moment, neither spoke.

For a moment, her head moved to close the gap, but she caught herself, pulling back before lightly chopping Kong on the head.

"We shouldn't waste time when morning is just around the corner," Robin said, her voice even as she turned her attention back to the books in front of her.

But Kong didn't move, his gaze fixed on her, unreadable.

"No… I think I should leave now," he said softly, rising to his feet. Robin looked up at him in shock, clearly not expecting those words.

"I seem not to fully understand you yet. I thought you feared nothing, not even death… yet when I look into your eyes…" Kong paused, searching for the right words.

"Hope… they lack hope," he said softly. Robin looked away, her expression unreadable. But Kong simply smiled.

"Here," he said, his finger detaching from his hand and reshaping into an orb.

"Enel, mind creating a golden necklace or something to hold this inside?" Kong asked, his gaze shifting toward a tree where Enel had been quietly watching.

Enel had been following them ever since they left the festivities, though Kong wasn't sure why. With a sudden flash of lightning, Enel descended from the branch, landing on the ship. His golden staff reshaped itself into a necklace, securing the orb within its design.

Kong's face twisted slightly as he felt the heat radiating from the necklace that held the necklace. it was burning hot, sending sa harp pain through him. Without hesitation, he plunged his hand into the cloud ocean below to cool it down. Once the searing pain subsided, he retrieved the necklace and held it out to Robin, who had been silently observing the entire exchange.

"You're not allowed to give up on your dream, not when you're getting so close. If not for yourself, then for those you lost that day. What better way to honor their memory than to uncover something as monumental as the Void Century?" Kong said, his voice steady as he placed the necklace around Robin's neck.

"S-stop," Robin whispered, her voice barely audible.

"You can call me by pouring water on the fleshy part of that necklace. I'll always be just one call away…" Kong said, his fingers gently tilting her face up to meet his gaze.

"I will not let you abandon your goals. I will not let you abandon your dream. Even if you want to give up, I will make sure you live and see it through," Kong said with a gentle smile. Robin's breath hitched, her hands tightening slightly as she fought back the tears welling in her eyes.

"You're not just my teacher—you're my friend," Kong continued. "Until we meet again." With that, he turned, signaling Enel to lead the way to their ship.

Robin remained still, watching them disappear into the distance. The moment they were gone, the walls she had built around herself cracked, and silent tears slipped down her face. Just days ago, she had resigned herself to death, believing she had no place in this world. But Luffy had saved her—forcefully, against her own wishes—so she followed him, making him responsible for the life she hadn't planned on keeping.

But even now, she didn't truly see herself as a Straw Hat. She was afraid to open up. Her whole life, the few people who had ever shown her kindness—outside of those from her island—had all betrayed her in the end. Deep down, she was waiting for history to repeat itself.

So one could understand the weight of Kong's words. They were cruel words, for the Straw Hats were different, if she were to open up to them and was betrayed… she didn't know if she would have the strength to go on.