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Chapter 724 - Chapter 724 — Iron Smoke Dragon

-Broadcast-

Trapped inside the seastone cage, Smoker could do nothing but watch.

The Seastone lattice pressed against his smoke-form with a constant, numbing weight — not painful, exactly, but persistent in the way that drowning is persistent. His Devil Fruit's instinct to disperse kept running into the bars and folding back on itself. He held his shape anyway and turned his attention to the battlefield fifty metres away, where something that should not exist was demonstrating exactly why it should not exist.

Edward Newgate. Standing. Moving. The Conqueror's Haki rolling off him in waves that the cage's metal did not block in the slightest.

That old man is alive? The thought arrived and Smoker immediately discarded the framework. He had been at Marineford. He had watched the sequence of events with his own eyes: Ace dying, Sakazuki taking the killing blow, then Whitebeard — already dying, already missing pieces of himself — putting Sakazuki on the ground hard enough that the admiral disappeared for months afterward. Then the Blackbeard Pirates coming in for the ending. Then the stillness that followed.

The bodies had been collected.

Whitebeard was dead and buried and the era he had anchored had moved on without him.

Whatever was standing on Iron Island was not alive. But it was not behaving like something that understood that distinction.

"Stop worrying about things that aren't your problem." Gajeel had not looked away from his own opponent. His voice carried the particular satisfaction of someone who had spent time setting something up and was watching it pay off. "Your situation is what you should be worried about. Smoker — you're about to become a Revolutionary Army prisoner."

The cage had been a neat piece of work, Smoker would give him that. Iron Dragon Spear into a net formation, the seastone-laced metal closing around him from multiple angles before he could fully disperse. Now Gajeel had a Marine Admiral in a box and the leverage that came with it.

In the current landscape, that was genuinely significant leverage. The Marine was the dominant force on every sea — its power sitting at a historical peak, the kind of accumulated supremacy that made other organisations measure their own survival in terms of how long they could avoid direct confrontation with it. Anyone who could threaten that balance, even temporarily, would be listened to. An Admiral in a cage was the kind of bargaining chip that created breathing room.

Smoker looked at the man who had caught him and thought: he's smarter than he looks, which still isn't saying much.

"Gajeel." He kept his voice even. "Your head is full of iron ore. I worry about the Revolutionary Army sometimes. Sabo drew the short straw getting a commander like you."

"Big words from the man in the box."

"I'm going to be out of the box in a moment," Smoker said conversationally, "and then I'm going to have to decide whether to put you in Still Water Prison before or after you've woken up."

He had already started.

The Moku Moku no Mi (Smoke-Smoke Fruit) was not, on paper, an imposing weapon. Smoke attacks, smoke restraints, smoke screen — the physical applications were real but limited against opponents who had spent their lives hardening their bodies or wrapping their skin in Armament Haki so dense it could turn a blade. You could not out-muscle a Zoan-type who had refined their Haki against opponents tougher than white smoke. That contest had a predictable winner.

Smoker had spent years finding a different contest.

The cage's compressed air had been changing for several minutes, slowly enough that Gajeel's attention had been elsewhere. The Moku Moku no Mi offered him a natural conversion pathway — harmless white smoke into something considerably less harmless. Carbon monoxide had no colour. It had no smell. It gave no warning before it started occupying the space that oxygen needed, sliding into blood far more readily than the gas it was displacing, quietly dismantling the body's ability to function from the inside while leaving the outside looking entirely normal.

Gajeel's hand went to his throat first. Then his knees folded.

The Iron Dragon commander hit the ground and stayed there, his body refusing the instructions his mind was sending, his lungs pulling in air that was doing the opposite of what air was supposed to do. The more he breathed, the faster the deficit accumulated. Smoker watched him with the clinical attention of someone who had field-tested this on difficult opponents and understood exactly what stage they were at.

Without Gajeel's active control, the seastone cage lost its structural coherence. The lattice came apart piece by piece, the bars drifting and separating in the air, and Smoker's smoke-form pushed through the gaps and reconstituted beside the collapsed man on the ground.

He stood over him. The position felt appropriate.

"Mock Town wasn't nothing," Smoker said, and the honesty was genuine rather than performed. There had been one operation — both sides forced into a temporary arrangement by circumstances neither of them controlled, working together long enough to get out of a situation that would have killed them both separately. He had not enjoyed it. He had not hated Gajeel for it. "If we hadn't worked together there, one of us probably doesn't walk away. I can acknowledge that." A pause. "I'll make sure you get a decent cell."

Gajeel was not unconscious.

Smoker registered that with the small, focused part of his attention that never fully lowered its guard, and what came next arrived fast enough that the warning was almost simultaneously the event.

Gajeel breathed in.

Not the shallow, failing gasps of someone in respiratory distress. Something deliberate. Something that went inward rather than seeking air — an absorption, a pulling, the way a forge draws oxygen into its interior when the bellows are worked. He was breathing the carbon monoxide. Not fighting it. Not filtering it. Taking it in as raw material.

As long as the Devil Fruit is dragon-type, Smoker thought, there's never been a weak one.

The change was visible. The skin that had been exposed on Gajeel's forearms and neck was going dark — not bruising, not hypoxia's blue-grey, but a true black that carried a metallic undertone, catching light the way iron plate does when it's been properly worked and tempered. The surface was hardening, the texture resolving into scales, each one overlapping its neighbours with the geometric precision of armour that had grown rather than been assembled. His musculature thickened with each breath. The carbon was not destroying him. It was becoming him — integrating, adding to the iron already in his tissues, building density in layers.

His eyes opened. Whatever they found in Smoker's face, it seemed to please them.

"Smoker." The voice had a resonance to it now that hadn't been there before — lower, more substantial, as if it was coming from a larger space. Gajeel pushed himself upright. The movement was unhurried. "You fed me."

He rose to his full height. The scales covered most of his visible skin, black-iron layered over the existing metal of his Zoan form, and the two materials had combined into something that did not have an obvious weakness to present. His breath came easily — more easily than it had before, surrounded by an atmosphere he could now use directly.

This was the Iron Smoke Dragon mode. The absorption attribute of his mythical beast frame, the same fundamental mechanic that had once taken in iron and made it native, had processed the carbon from Smoker's poison gas and built it into the existing structure. He carried both attributes now.

Smoker did not allow himself to recalibrate visibly. He reassessed internally, quickly, and completed the task before Gajeel had finished standing.

"Have a taste," Gajeel said.

〈Roar of the Iron Smoke Dragon〉

He opened his mouth and the sound of it was wrong — not a roar in the conventional sense but a pressure event, the kind of release that a body produces when it has accumulated beyond what normal tissue could contain. Iron filings and carbon particulate merged in the throat and came out as a shockwave, the two substances combining into something that behaved like neither independently. The column of compressed force tore skyward in a column that was white at its origin, the Moku Moku no Mi's smoke signature showing clearly at the base, and then as it climbed and the carbon asserted itself, the white shifted through gradients — blue, deep blue, purple at the outer edges where the energies had fully combined.

It went through the treeline. The trees did not bend. They came out of the ground. A section of Iron Island's eastern ridge lost its corner where the column grazed it, the stone sheering cleanly and the debris falling in pieces that were still tumbling when the shockwave's sound finally caught up to them. The Iron Tower — Gajeel's chosen landmark on this island — vibrated at a frequency that made its bolts groan.

The purple shockwave climbed until the sky absorbed it.

Gajeel lowered his head and looked at Smoker through the settling particulate.

The expression on his face was the one he wore when a fight had just stopped being an obligation and started being something worth his full attention.

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