Finn turned the Onoki contract over in his mind and arrived at the same conclusion Kakuzu had, but from a different direction.
The Tsuchikage was presenting vulnerability. The request for outside contractors, the apparent shortage of manpower, the willingness to pay premium rates for what was described as harassment and delay work along the Cloud's supply lines: all of it read, on the surface, as genuine desperation. The Hidden Rock was fighting on multiple fronts and showing strain. The Hidden Cloud had pushed into the Land of Earth and was establishing positions that suggested confidence.
The confidence was the tell. The Cloud had always been militant, had always favored forward pressure over caution. It was their institutional character, built across generations of shinobi who had decided that intensity of will could substitute for bloodline advantages they didn't possess. It had worked often enough to become doctrine. What it had not produced was a particularly refined sensitivity to situations where the apparent opening in front of them was the point rather than the opportunity.
Onoki was one of the most experienced tacticians in the ninja world. He had been fighting wars longer than most of the commanders currently opposing him had been alive. A man like that did not accidentally leave his territory permeable to a major Cloud incursion. He created the permeability, calibrated it to appear exploitable, and then waited for the Cloud's forward commanders to do exactly what the Cloud's forward commanders always did.
The outside contractors were part of the theater. They made the desperation look real. They also provided genuine utility at the margins without revealing the full scope of what was being set up.
Kakuzu had not identified any of this. Finn had not expected him to; Kakuzu's intelligence about military strategy was functional but not deep, oriented around individual engagements rather than campaign-level thinking. He saw a high-paying contract with manageable risk. Both of those assessments were accurate as far as they went.
"I'll go," Finn said.
"The reward," Kakuzu began.
"It's not about the money," Finn said. "There's someone in that theater I want access to."
Kakuzu waited.
"The Third Raikage."
A short silence. "He's the enemy commander."
"Eventually he'll stop being that," Finn said. "When he does, I want to be positioned correctly."
The Third Raikage was the kind of shinobi who appeared once per generation at the outside, and sometimes not even that. His Lightning Release Armor was not simply a strong technique; it was a complete defensive and offensive system built around a specific approach to chakra saturation that had been developed and refined through the Raikage lineage over decades, each generation adding to the methodology, the Third representing the current peak of that development. He had stopped the Eight-Tails Tailed Beast Ball without damage, which was a statement about defensive capacity that almost nothing else in the ninja world could match at that scale. The only injuries he had ever sustained in combat were self-inflicted, the result of using his own techniques at full power against an opponent that had forced him to exceed normal operational limits.
That kind of ninjutsu was exactly what Finn wanted access to. Not to replicate it wholesale, which was probably not possible anyway without the lineage behind it, but to understand its architecture. How the Lightning Release was being used, what the chakra saturation mechanism was, what the technique's relationship was to the user's physical constitution. If he could get the body, or better still exchange the body with the Cloud Village directly for access to the technical knowledge it contained, the acquisition would be worth considerably more than anything Onoki was paying for supply line harassment.
"The Cloud won't let a stranger walk away with the Third Raikage's body," Kakuzu said.
"Probably not. Which is why I'd want to negotiate from a position of already having it." Finn paused. "There are also other options. The brain contains the knowledge. Someone with sufficient technical skill could extract what's in there without destroying it in the process. The problem is that level of skill is specialized, and the Kage-class individuals almost certainly have protective measures installed against exactly that kind of extraction."
Kakuzu looked at him steadily. "You're describing a technique that requires both deep ninjutsu knowledge and a specific orientation toward corpse research. As a combination."
"Yes," Finn said.
The name arrived in both their minds at roughly the same moment, which Finn could tell from the slight shift in Kakuzu's expression.
"Orochimaru," Finn said.
"Orochimaru," Kakuzu agreed, with the tone of someone confirming a logical conclusion rather than recommending a person.
"Do you know him?" Finn asked.
"I know of him. I haven't worked with him directly." Kakuzu thought for a moment. "He's active in the dark world. Buys unusual materials, occasionally sells research outputs that he no longer considers worth his time. He's generous with money in both directions, which makes him known to most of the major Exchange networks. Finding a contact point wouldn't be difficult."
"Do you know where he is right now?"
"Probably still in Konoha."
Finn thought about this. If Orochimaru was still inside Konoha's structure, working under the ROOT umbrella with Danzo's institutional cover, direct contact through normal channels was not going to be the right approach. ROOT members did not receive messages through the open dark world network. The message would need to be interesting enough to pull him out of that structure rather than into it.
He thought about what Orochimaru wanted. Not in a general sense but in the specific, driving, organized-around-it-daily sense. Immortality, primarily. The techniques that approached it, the biological pathways that led toward it, the materials that might unlock it. He had spent years on Hashirama cell research precisely because those cells represented the most concentrated instance of yang-attribute life force in any known biological sample, and yang-dominant life force was the direction that led, theoretically, toward bodies that could not be killed by ordinary means.
Finn was, among other things, functionally immortal. He had not advertised this. He did not know the precise biological mechanism of it; it was a property of his existence that predated his self-awareness, something built into him through processes he had not been present for in any conscious sense. But the evidence was consistent and long-standing: he did not age in the ordinary way, damage that should have been permanent was not, biological processes that should have deteriorated had not.
If he sent Orochimaru a blood sample and Orochimaru was half as capable as his reputation suggested, the sample would raise questions that Orochimaru would find completely impossible to set aside.
"Come with me to the laboratory," Finn said.
Kakuzu looked at him with moderate suspicion. "Why?"
"I need a needle and a sample tube and about thirty seconds of your time. After that, I need you to route something through your contacts to Orochimaru's attention."
Kakuzu processed this. "What am I routing?"
"Evidence that I exist," Finn said. "He'll do the rest."
In the laboratory, Sasori did not look up when they entered. He was at the main table with what remained of Uchiha Kagami's body, which was showing the cumulative effects of two months of experimental intervention. The condition of the material had degraded to the point where Finn privately estimated three or four more attempts before the body was no longer viable as a research subject. Sasori's posture communicated, without words, that he was aware of this and was not in a mood to discuss it.
Finn located what he needed, drew the sample quickly and efficiently from his own forearm, sealed the tube, and wrote a brief message to accompany it. He kept the message simple: a name, a location contact through the Exchange network, and a single line noting that the sample's donor was interested in collaborative research on the intersection of bloodline limits and unconventional biological properties. Nothing that would read as a threat or a trap. Just enough to be interesting.
"This goes to Orochimaru," he said, handing the sealed package to Kakuzu. "Through whatever chain you'd use for sensitive material. Don't attach my name directly; route it through the Exchange designation."
Kakuzu looked at the package. "You think a tube of blood is enough to get a response from someone operating inside Konoha's intelligence structure."
"I think a tube of blood that tells him something he has never seen before and can't explain is enough to pull his attention out of whatever else he's doing," Finn said. "After that, his own curiosity does the work."
He turned his mind over what he knew about the man. Every item on the list that Finn cared about in this world, Orochimaru either cared about or had already been working on. Wood Release, Hashirama cells, Sharingan research, the upper limits of ninjutsu theory, the biological boundaries of what a human body could sustain and exceed. Their research interests were nearly identical. Their methods overlapped substantially. The moral framework underneath the methods was different in some respects and entirely identical in others.
Orochimaru was not a good person, as a widely agreed-upon assessment of his behavior and its effects on others.
Finn turned this observation over and then looked at himself honestly: a man who had taken a Uchiha senior shinobi off a battlefield, handed him to a puppeteer for experimental research, and was now planning to position himself near the death of an enemy village's leader so he could acquire the body for intelligence extraction. Operating as the boss of a criminal underworld Exchange network. Planning to dig up the graves of the ninja world's founding figures for scientific purposes.
The category of "good person" was doing a lot of work that it was not necessarily equipped to do.
He and Orochimaru had the same interests. They had, by any honest accounting, roughly comparable moral frameworks when applied to the actual texture of what both of them were doing. The difference was that Orochimaru's methods had produced consequences that Finn found genuinely unnecessary and gratuitous in specific ways, whereas Finn's methods were more calibrated toward outcomes rather than process. But "more calibrated" was not the same as "different in kind."
Yes, Finn thought. We definitely get along.
He looked over at Sasori's hunched figure at the main table and said, "We're heading to the Land of Earth for a contract. Do you want to come?"
Sasori did not respond immediately. The work in front of him was at a critical and frustrating stage, and his investment in resolving it was clearly still high enough to outweigh most other considerations.
"No," he said.
"Fair enough. Don't break the eyes," Finn said. "Whatever else happens to the rest of the material, the eyes need to stay viable. I'm going to continue that research line through someone else."
A pause. "I haven't given up on it," Sasori said, with a flatness that contained something underneath it.
"I know. But you should know I have alternate plans in place regardless." Finn kept his voice easy. "When we get back, we can compare notes."
He and Kakuzu began preparations to move. The Land of Earth was a significant distance from the Land of Birds, through contested terrain, during an active war. They would need to move carefully and would need to time their arrival relative to the intelligence Kakuzu had about the Cloud's forward positions.
Finn put on his coat, moved the Shindokuto to its traveling position at his hip, and took one last look at the laboratory. Sasori, bent over his work, the preserved eyes of Uchiha Kagami in their separate container on the adjacent shelf, the scrolls of research notes stacked along the wall. Two months of accumulated knowledge about how this world's power systems actually worked, all of it now sitting in his head alongside everything else.
He stepped out into the Land of Birds' gray afternoon light and fell into step alongside Kakuzu.
The war was out there, and the Third Raikage was somewhere at the front of it, and somewhere in Konoha a tube of blood was about to make its way through several layers of the dark world toward a laboratory where a brilliant and morally flexible scientist was going to look at it and find something he could not explain.
Finn thought this was a reasonable state of affairs and kept walking.