The wasteland stretched out ahead of him in every direction, flat and broken, the soil dark with rain and covered in loose rubble where the land had been churned up by weather and old fighting. Nothing grew here. The Hidden Rain Village's permanent drizzle had turned the surface into a dull gray expanse of mud and fractured stone, empty all the way to the treeline far in the distance.
Finn looked it over and nodded.
"Here," he said, to no one. "This'll work."
He raised his hands and began to form seals.
Tiger → Snake → Ram → Serpent → Dog
The sequence was deliberate, not rushed. There was no technical requirement for speed here; the seals were a catalyst, not the thing itself. When the final Boar seal completed, he pressed his palms together in front of his chest and felt the chakra shift inside him, that particular internal pivot when technique and intent aligned.
"Wood Release: Sea of Trees Birth!"
The ground moved.
Roots came first, then stems, the wood splitting through stone and packed earth in a dense, accelerating wave. Branches extended as the trunks rose, growing thicker as they climbed, the whole progression happening at a speed that made the individual stages difficult to separate. By the time the wave had traveled two hundred meters in every direction, what had been bare wasteland was a forest. Not a suggestion of one, not young growth that would take decades to become something. A forest, now, dense and tall and complete, the canopy closing overhead in overlapping layers.
Finn looked at it for a moment.
He'd been carrying Wood Release for several months now. He had studied it, practiced it, felt it integrate into his physiology during those three days when he'd been more tree than man and Orochimaru had watched from a careful distance. He knew the technique worked. He'd verified it in controlled conditions, in smaller demonstrations, in the basic applications Orochimaru had taught him from Konoha's research archive.
But watching a wasteland become a forest in the span of a few slow breaths was still something that took a moment to absorb.
He pulled the scroll from his waist and unrolled it. The one Black Zetsu had handed over, the collection of Wood Release techniques that Uchiha Madara had accumulated and documented over his years of study. He went through it again, moving section by section, and arrived at the same conclusion he'd reached twice before.
"The Flower Tree World Birth isn't here," he said quietly. "The True Thousand Hands isn't here. The advanced transformation forms aren't here."
Black Zetsu had been generous. The scroll was real, the techniques were genuine, and several of them were things Finn had been making good use of since receiving it. But the highest tier of Madara's Wood Release was absent. The Flower Tree World Birth, the evolved form of what he'd just performed, was something Madara had used and Finn had seen referenced. It wasn't in these pages.
He rolled the scroll back up and hung it at his waist.
Not unexpected. Black Zetsu was not careless. Handing over genuine value while retaining the most significant pieces was a natural strategy from someone managing a long-term relationship. Finn held no particular resentment about it. It was what he would have done.
What he had, though, was enough to work with.
He turned the structure of the technique over in his mind.
The Boar seal. That was the key one. In Hashirama's hands, the entire Sea of Trees Birth had reduced to a single Boar seal followed by pressing the palms together. The full seal sequence Finn had just performed was supplementary, his own attempt to compensate for the difference in instinctive mastery with deliberate technical precision. He'd been needing to build the pattern externally that Hashirama had carried internally.
But he was beginning to understand what Hashirama had understood, or at least the shape of it.
Wood Release was not a rigid set of forms. It was a principle. The Boar seal was a catalyst that shifted chakra into something better described as life force, raw vitality, the biological charge that made wood grow and living things persist. Once that conversion happened, the technique was fundamentally manipulation of that vitality. Growth, direction, scale, density. Every Wood Release application he could think of was a variation on: create life force, then shape what it does.
And if that was true, then everything upstream of the shaping was overhead that could eventually be eliminated. The seals were a scaffold. The scaffold was not the building.
He thought about Hashirama's one-handed Boar seal and wondered how long it had taken to arrive at that simplification, and how much was talent and how much was accumulated understanding.
Finn clasped his hands in front of his chest, let his breathing slow, and opened himself to Sage Mode.
Natural energy came in from the surrounding environment, folding into his chakra in the way it now did without strain or instability, the integration smooth after months of practice. The Sage Mode settled across his senses and he could feel the difference immediately: the Wood Release chakra inside him had changed quality. Not just stronger, though it was stronger. The natural energy had a particular affinity with it, something that enhanced the output in ways that went beyond the standard conversion of technique into Sage Art.
It made sense. Wood Release operated on the same principle that natural energy itself was grounded in. Both were expressions of the life force underlying the physical world. Sage Mode didn't just amplify his Wood Release the way it amplified other techniques. It resonated with it.
He made the Boar seal again, hands clasped at his chest, and held it.
The ground under his feet cracked. Not from a technique, just from the chakra itself pressing outward, the compressed energy finding the path of least resistance through the rock. The cracks spread in a ring several meters wide, then stopped.
He thought about what he was trying to build.
In the One Piece world, the Myōō were a known framework. Kaido had been called Gokoku Myōō, the Wisdom King of the Five Elements, and his combat style had developed in that direction. Five-form transformations, elemental coverage, the particular quality of power that the Myōō tradition encoded. Finn had watched that framework operate from a distance and formed his own views about it.
His own preference was different.
Acalanātha. The Immovable Wisdom King. Fudō Myōō.
The name carried a precise meaning that was not obvious on first encounter. Immovable did not describe a thing that could not physically move. It described a thing that could not be shaken, could not be displaced from its nature, could not be interrupted in its function regardless of what came against it. The immovability was internal. The word pointed at an absolute stability of essence.
Finn thought that was the direction he wanted to develop.
He exhaled through his nose and let the technique go.
"Immortal Art: Acala!"
The ground beneath him collapsed completely. Not fractured, not cracked. Removed downward. And from below, wood rose.
The statue came up fast enough that the speed itself was a force, the shockwave of its emergence pushing air outward in every direction. It grew from the ground like something surfacing, four-faced, eight-armed, monumental, the wood grain visible in its surface but dense and layered enough to look more like carved stone than living material. A dharma wheel rose from the crown of the topmost head, its spokes radiating outward in a pattern that caught the grey light of the overcast sky. Each of the eight arms was articulated and distinctive, each carrying something different: a blade, a staff, an axe, a pestle, a chain, a halberd, a shield, a trident.
The faces were solemn. Not peaceful, not wrathful in the human sense. Solemn in the way that force which has nothing to prove tends to be solemn. Composed absolutely, with the particular gravity of something that had stopped needing to assert itself.
Within a few breaths it was done. Finn stood on top of the highest head, looking out over the wasteland from a height that made the distant treeline look reduced.
The size was not the issue. Creating something of this scale required only chakra in sufficient volume, and chakra in sufficient volume was not a constraint he would ever face. The form was there. The mass was there.
He directed the right arm to extend forward.
The arm moved, and then it broke.
Not a failure of force. The elbow joint fractured along a wood grain line that hadn't been reinforced correctly, the leverage of the arm's own extension weight creating a stress the structure hadn't been built to absorb. The forearm fell and hit the ground forty meters below with an impact that sent mud spraying ten meters in every direction.
Finn looked at the remaining stump. Then he looked at the cracks that had begun spreading from the elbow joint outward along the upper arm, tracing along grain lines and branching at weak points.
He released the technique.
The statue stopped growing. He stood on its disintegrating head for a moment, then jumped clear and fell freely, catching himself at the twenty-meter mark with a quick Boar seal.
A small Acala rose from the ground and caught him. About the height of a two-story building.
He tried the arm again. It moved.
He tried the leg. It moved.
He walked the small Acala through a full range of motion without a single joint failing or a single crack developing.
He stepped back from the small statue and looked at it, then looked at the rubble of the large one behind him.
"Small one works perfectly," he said. "Large one can't move without falling apart."
He stood with that for a moment.
The difference was obvious when he thought about it clearly. A twenty-meter wooden figure moved on the same principle as a wooden puppet. The control technique he was using, the one derived from the Wooden Clone method, was adequate for that scale. The joints were properly proportioned, the leverage ratios were within the range the technique could handle.
A version the size of the True Thousand Hands was a different engineering problem entirely. The leverage ratios changed, the structural requirements changed, the grain direction needed to be managed differently at each scale of the internal skeleton. The control technique that worked for a twenty-meter figure was not the same control technique required for something four times taller and proportionally more massive.
Hashirama had solved this problem. The True Thousand Hands moved, and moved fluidly, and moved as an expression of Hashirama's own body without any apparent gap between intention and execution. That solution had taken years to develop and was not in the scroll Black Zetsu had provided.
Finn had assumed that understanding the principle of Wood Release well enough would let him derive the control technique for large-scale forms from first principles.
He had, apparently, underestimated the problem.
He sighed. "A bit presumptuous," he admitted.
Wood Release had been part of his arsenal for months. The True Thousand Hands had been Hashirama's life's work, built over decades of singular focus. The assumption that he could reconstruct the control technique from scratch, immediately, without the foundational development that made it possible, was genuinely overcalculated on his part.
He wouldn't dwell on it. The problem existed; he had mapped its dimensions; that was sufficient for now. Development of a large-scale Wood Release form he could actually operate would be something he returned to gradually.
He climbed back up the small Acala statue and sat cross-legged on its head. His hands settled into a position that looked like meditation, palms together at the level of his lower abdomen, but his attention had already moved elsewhere.
The breathing adjusted itself, natural energy cycling in and out with his respiration, sage chakra revolving slowly through the network. On the outside, it looked like a training session that had paused.
Inside, he was working.
The Secret Art of Spiritualization had been in his hands for four days. The progress had been faster than expected, which had been the expectation, but it was still striking to feel it actually happening. The technique operated through sustained directed attention applied to the structure of the soul itself, using body energy as the medium. With the volume of chakra and natural energy available to him, the rate of conversion was considerably above the baseline the technique was designed around.
He could feel the difference already. Something in the quality of his awareness at the deepest level, in whatever it was that the shinobi world called mental power and the technique was beginning to strengthen directly.
The wasteland was quiet around him except for the rain.
He breathed in. He breathed out. He practiced.