Graviton

"I am Graviton."

Hearing this, I nodded, realizing the voice sounded feminine. I understood it was female, just like her "mother," Merry—though now she was Wraith Merry.

Soon, Graviton began to emerge from within me. A slimy, black-gold substance oozed out and surrounded me, forming an armor around my body.

Seeing me like this, everyone looked confused. Valeria and the others came over, touching the armor. "What is this?" Valeria asked, looking at me.

"A kind of suit, you could say," I replied, my voice sounding deep and cool—if I had to describe it.

"Is this your Devil Fruit?" Ace asked, thinking it was an effect of a Mythical Zoan Devil Fruit.

Hearing him, I nodded; it was the perfect cover. "Yes, it's the Gravity Devil Fruit, Graviton." My symbiote has the power to control gravity and create armor, similar to Riot. However, unlike Riot, it can even take in molecular information from other materials and mimic them. For instance, it can absorb Vibranium now and replicate its properties to create weapons out of such material—a copy of my Overhaul Quirk.

A good combination for me.

And not only that , wearing it increases my physical capabilities by 1,000% , a lower factor but it is also due to it being just a newborn.

I nodded, checking out my appearance. I now looked like a typical symbiote, but my color scheme was gold with black markings all over me. My eyes were black with golden lines running through them.

Honestly, this look was terrifying—like something out of an adult horror dream. Not the kind that scares kids, but one that would haunt adults. You can imagine just how unnerving it is. I don't know why, but it looks way scarier than I thought it would.

'Come back' I said mentally as it resided back within me.

"That looks cool," Francis said, and I nodded.

"Anyway, Valeria, how long will it take for our ship to be ready?" I asked. She looked at me, considering.

"If I start now, it'll take about a month since I don't know how to build one from scratch. However, if there's an existing ship, I can upgrade it to our standards," she replied, and I nodded.

"Vivi, get us a ship. Valeria, once we have it, start working on the upgrades. As for the rest of you, start training. We'll be calling down a lot of firepower on our way," I said, glancing over at Robin, who was quietly observing us.

At my word, Vivi brought Robin over.

"What do you want from me?" she asked, meeting my gaze. I noted her usual confidence; she'd already seen how terrifying I could be, as well as the others on this ship. She likely knew she could only survive here if she didn't cause unnecessary trouble.

 "Do you need me for Ancient language?" She asked as she looked at me.

"No," I replied. I don't care about Poneglyphs or whatever. I just want to become stronger, and now that I'm here, I want to bring down the World Government, too.

Robin's eyes widened for a moment at my words, then she looked at me calmly. "Then what do you want?"

"You're a survivor of Ohara, right?" I asked. She looked at me, then nodded.

"I am too," I replied, and her eyes widened again.

"Who are you?" she asked, studying me.

"We weren't originally from Ohara. We only went there because we wanted to see the Tree of Wisdom. But then the Marines arrived with a Buster Call. In my family, only I survived," I explained, setting up my story for this world.

"So, as a fellow survivor, you can join me," I said, watching her closely.

"Can you give me some time?" she asked. I nodded, saying, "I'll give you Hundred days." Then, I placed my hand on her shoulder and sent her on her way using Super Travel.

[ Target Nico Robin World is Full Metal Alchemist : Brotherhood ]

For a nerd like her, It's a good world.

"Now, bring me my prisoners," I said, and Ace nodded, bringing out the bound Smoker and Tashigi.

I sat in front of them calmly, observing their wary expressions. Smoker, however, looked more intrigued than fearful.

"Remove their gags," I instructed, and Ace took off the coverings from their mouths.

"What do you want from us?" Tashigi asked, her gaze fixed on me.

"Capturing us won't do you any good," Smoker added, watching me closely.

Ignoring their questions, I asked, "What do you think of Marine Justice?"

"Huh?" Tashigi seemed confused, while Smoker kept silent, studying me.

"I know your current strength limits what you can do, but what if I offered you more power?" I said, and both looked at me, surprised.

"You would give us power?" Tashigi asked, while Smoker remained silent.

"I would. But in return, I would also place a curse on you. If you ever stray from true justice, you will lose those powers," I said, and Smoker finally spoke.

"What do you mean by 'true justice'?" he asked.

"I mean that even if your higher-ups order you to do something illegal, you can't comply with it," I explained. He fell silent before asking, "Why are you doing this?"

"Have you ever met a Celestial Dragon?" I asked, and he looked at me, shaking his head. "No, I haven't."

"I thought so," I said, meeting his gaze. "Let me show you a small glimpse of them." I projected my memories of the Celestial Dragons for them to see.

Though these memories came from the anime and manga I had seen, they were enough to convey the truth.

After a few minutes, I looked at the sweating Tashigi and Smoker. Tashigi seemed shaken, her voice trembling as she stuttered continuously.

"now, what do you think of them?" I asked once again but this time they wee too shaken to give any answers.

"..I don't know" Smoker replied while for Tashigi she just remain silent but from her gritting of teeth and clenched hands, it's was easy to guess, she has lost faith in Marine, especially after what she has seen in Albasta.

'One Down' I inwardly thought.

***

Check out my other books while waiting for this one, My new Original : Absolute Cheater & Final Life Online.

These two Novels are in same universe, and much later the ML of my both will face each other.

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It's 10 chapter ahead.