The Kato clan's spiritual transformation technique was, on reflection, exactly what Finn was looking for.
Most methods of genjutsu resistance operated at the chakra layer — disrupting the technique's mechanism, overloading the pathway, or forcing a release through counter-stimulation. These were valid approaches for practitioners who had developed robust chakra control and the presence of mind to apply it under active mental assault. They addressed the delivery channel without touching the underlying problem.
What the Kato technique did was different. It worked directly on the soul as a structure — hardening it, in the way that metal is hardened through repeated heating and striking, until the soul itself became something that external spiritual interference could not easily reshape. It was categorically different from the Dead Demon Consuming Seal, which involved exchanging one soul to bind another and left both parties destroyed. It was different from Impure World Reincarnation, which leveraged existing souls as material without developing them. The Kato technique was self-directed refinement. The soul becoming something more than it was through deliberate practice.
For a technique to force a soul to fly out of the body and break an enemy's mind from within — which was apparently something the Kato clan could do — the soul operating that technique had to be exceptional in its own right. A fragile soul attempting that would simply self-destruct under the outgoing pressure.
"The Kato clan," Finn said. "Is there a way to obtain the technique? Purchase, exchange, something?"
Orochimaru shook his head with a trace of genuine regret. "The clan has no active ninja remaining. And they maintained good relationships with all three of us for a long time. Using force or pressure against them..." He paused. "Besides, I doubt the clan currently has the technique in any form they could transmit. They've effectively stepped away from the profession."
The Kato clan's situation was a quietly sad story in the background of Konoha's history. Kato Dan had been the clan's last real hope in the ninja world — a man whose ambition to become Hokage represented something the whole clan had invested in. He'd died in the Second Shinobi World War, and what went with him wasn't just a life but an entire orientation. After his death, the clan had looked at the cost of the road they'd been on and made a collective decision to find another one. They were merchants now, or close to it. The ninja profession had taken enough from them.
"Then who would have the technique?" Finn asked.
"Most likely Kato Dan's niece," Orochimaru said. He set down his tea. "Kato Shizune. She was young when Dan died — not long after the Second War, she left Konoha with Tsunade. She's the only person from the Kato clan who still has any serious training as a ninja, and that's because Tsunade has been teaching her medical ninjutsu. But she doesn't use the Kato name publicly. Everyone just calls her Shizune. If the spiritual transformation technique hasn't been lost entirely, she's the most likely keeper of it."
Finn worked through the implications. Shizune. Tsunade's assistant, the woman who was essentially inseparable from Tsunade anywhere she went. If he wanted the soul technique, he needed to find Shizune, which meant finding Tsunade.
"You were close with her," Finn said. "Do you know where she is?"
"We haven't been in contact since we parted ways." Orochimaru said this without particular weight, as if it were simply a fact about geography. "Tsunade has no intention of returning to Konoha, as far as I can tell. She won't come back to the ninja world." He paused, and then something in his expression shifted — not quite humor, but adjacent to it. "If you want to find her, I'd suggest looking at the gambling houses in whatever major city you're near. Find whichever establishment is currently hosting an unusually wealthy and unusually reckless regular who keeps losing and keeps returning. That will probably be faster than any direct search."
Finn considered this for a moment and then conceded it was probably accurate.
He'd tried once before, in Tansho Street on his first pass through the Land of Fire. He'd spent four days checking the gambling establishments and hadn't found her. Either she hadn't been in the region at the time, or she'd been temporarily in a streak of winning and therefore less visible. Either way, the two of them had consistently failed to be in the same place at the same time.
He set the problem aside. There were too many open fronts already and he'd long since identified the risk of trying to close all of them simultaneously. Sage Mode was progressing slowly but progressing. Wood Release was a waiting game. The Sharingan remained unresolved. Adding "locate a famously peripatetic gambling addict who doesn't want to be found" to the active list made no sense right now.
"Leave it for later," he said. "Speaking of which—" He looked at Orochimaru. "The Sharingan. Are you interested in researching it?"
Orochimaru's expression shifted slightly. "Should I be?"
"I think so. It's worth your time." Finn said nothing more specific than that. He wasn't going to hand Orochimaru a complete argument — better to plant the question and let Orochimaru's own curiosity develop it. "When you have spare attention, take a look."
Orochimaru frowned faintly. "I'll observe it when something comes up."
That was sufficient. The seed was in.
They made their way to the Root base that afternoon.
Danzo Shimura was, this visit, prepared. He was seated behind his desk with the posture of a man who had been notified of an incoming appointment and had arranged himself accordingly. No ramen. No unguarded domestic moment. He received them with the particular composed warmth of someone who knew they were in a negotiation and intended to be the more composed party.
"That's not kind of you," Danzo said, after the initial pleasantries. His tone was mild. "You agreed to a commission, a full year has passed, and as far as I can tell, nothing has been done about it. Meanwhile your subordinates have been quite busy across the rest of the ninja world."
"No suitable opportunity," Finn said, with a smile that acknowledged the mild accusation without accepting it. "This time, though, I'm bringing you something worthwhile. Consider this an overdelivery."
Danzo raised an eyebrow.
"I have a new member in the organization," Finn began. "Biwa Juzo, formerly—"
"One of the Seven Ninja Swordsmen of the Hidden Mist Village," Danzo said. "Executioner's Blade. Yes."
Of course he knew. This was precisely the kind of information Root existed to collect.
"Then you understand that my intelligence capacity regarding the Hidden Mist extends considerably further than most organizations operating outside the Water Country," Finn said. "Through that channel, I've obtained information about a rather unusual plan."
Danzo's posture didn't change, but his attention sharpened.
The Seven Ninja Swordsmen were the upper stratum of the Hidden Mist Village by any reasonable accounting. The Hozuki clan alone — whose young member Mangetsu Hozuki was currently working toward the same status, following in the line of his ancestor the Second Mizukage — demonstrated how seriously the Hidden Mist treated that designation. Families of that standing in the village appeared later as Mizukage candidates or their close advisors. A man with genuine Swordsmen connections and a reason to talk had real intelligence access.
Danzo was calculating this while he waited for Finn to continue.
"The Hidden Mist is running an operation that sounds implausible enough that most people who heard it would dismiss it," Finn said. "They're coordinating with two other major countries — I won't name them yet — around a very specific objective. The plan is to capture a Konoha ninja, seal the Three-Tails into them by force, and then release them back into Konoha. The controlled Jinchuriki releases the tailed beast from inside the village. The resulting chaos creates a window for a combined offensive." He paused. "The operation even has a name. The Konoha Collapse Plan."
At the mention of the name, Finn glanced at Orochimaru.
Orochimaru's expression remained entirely neutral.
Danzo sat with this for a moment. Coming from almost anyone else, this story would have gone directly into the category of fabrication — too elaborate, too conveniently catastrophic, the product of someone who wanted to seem more valuable than they were. But the man across from him had killed the Third Raikage, had fought the Fourth Mizukage to a withdrawal, and had a 500-million-ryo wanted designation that represented actual demonstrated capability. When someone with that profile presented intelligence, the default assumption had to be at least provisional engagement.
"If this is real," Danzo said slowly, "then disrupting it would represent a considerable service to Konoha."
"And here's the useful part," Finn said. "Orochimaru, as a Konoha ninja, will be formally associated with the operation. Credit accrues to his handler — which is you. You don't just get the Three-Tails. You get the story: Root intelligence identified the conspiracy, Root assets moved to neutralize it, the tailed beast was recovered from hostile hands and secured for Konoha's benefit." He spread his hands. "The Hidden Mist used tailed beasts as war assets first. Taking one back has a completely defensible justification. This is politically clean."
Danzo looked at him for a long moment, reassessing.
He'd originally commissioned the tailed beast capture as a private asset — something acquired quietly, kept as a reserve, the knowledge of it never becoming public. That approach was useful but limited. What Finn was now describing was something considerably better: a public triumph attached to his name, a demonstration of Root's capability and his own judgment, and genuine war-relevant intelligence capture, all packaged in a way that Hiruzen's people couldn't touch without appearing ungrateful.
"You want intelligence in exchange," Danzo said. It wasn't a question.
"Deployment locations. Minato Namikaze and Kakashi's current positions. I need to understand the field configuration to approach the target area correctly."
Danzo's fingers moved once, a small gesture at the edge of his desk. Somewhere behind the wall, a Root operative registered the signal.
"Tea," Danzo said, and reached for the pot himself.
He poured for Finn. After a moment, he poured for Orochimaru as well, which was a courtesy rather than an expectation. Orochimaru looked at the cup and left it on the table.
Finn drank his without apparent concern and let the conversation find a lower altitude. They discussed the Rain Country — Danzo had maintained his parallel relationship with Hanzo, as Finn had expected, and the situation in the Land of Rain was shifting. Hanzo's position had grown increasingly reactive. The pressure from Akatsuki was building, the pacifist organization's growth making it a political problem regardless of its actual intent. Danzo spoke about this with the detached precision of someone who had been running multiple concurrent contingencies for years.
The Root operative returned and presented a scroll with both hands.
Danzo opened it, read it, confirmed it contained nothing sensitive beyond what had been requested, and passed it to Finn.
"Namikaze Minato is operating near the southern coast of the Land of Fire," Danzo said. "And Hatake Kakashi is currently deployed at the Land of Rain's border — monitoring Hidden Rock Village movements on that front." He paused. "They're on separate assignments. Neither is anywhere near the Water Country or its adjacent coast."
Finn read the scroll without visible reaction.
This was exactly consistent with what he'd already known. Kakashi and Rin would not be at the coast — they'd be somewhere in the interior, in the vicinity of the border with the Land of Rain, in the specific place where Madara's setup was waiting for them. The "Hidden Mist coastal operation" was the misdirection. The actual event was happening elsewhere.
He looked up from the scroll and said, with perfect calm: "A feint east, strike west. Exactly as I'd expect."
Danzo studied him for a moment. The story still had the quality of something possibly constructed rather than discovered — but as he turned it over, he kept arriving at the same conclusion: his exposure was minimal regardless. If Finn was telling the truth, Danzo gained enormous benefit from a legitimate operation. If Finn was running some private scheme using the cover story, the tailed beast still eventually needed to be delivered, and Danzo's reputation wasn't attached to whatever else happened.
As for Kakashi's safety — Danzo considered this and found that it registered as a secondary concern at most. Kakashi was Hiruzen's protégé in the most direct lineage sense: the son of Sakumo Hatake, trained by Minato, carrying Obito's eye. If something happened to Kakashi in the course of this operation, that was a weakening of Hiruzen's network, which was not the same thing as a loss for Konoha's strategic position.
"I hope the cooperation is productive," Danzo said.
"The two forbidden techniques," Finn said pleasantly. "I look forward to seeing what you've selected."
He and Orochimaru left the Root base shortly after, emerging into the afternoon light of Konoha's outer perimeter, scroll in hand.