The voices outside were enough. Finn and Sasori stopped mid-argument, stepped away from the laboratory table, and came out into the passage together.
Finn's expression changed the moment he saw who was standing there.
He'd waited for this. The blood sample, the weeks of silence, the uncertainty about whether Orochimaru had found anything worth caring about — all of it had been a slow build toward this specific moment, and now it was here. He felt the satisfaction of a plan resolving the way it was supposed to.
The most valuable people to him in this world were not, when he thought about it honestly, the ones with the highest combat ceilings. Madara Uchiha and Hashirama Senju were categorically beyond most of what existed in the ninja world, and Finn respected that for what it was. But they were not, fundamentally, the kind of people he could learn the most from. Their power was theirs — the product of genetics and specific life trajectories that couldn't be extracted and applied elsewhere.
The scientific minds were different. Tobirama Senju had invented the Shadow Clone Technique, the Reanimation Technique, and the Flying Thunder God, among others — he had approached ninjutsu as an engineering problem and produced solutions that the ninja world was still using and misusing generations later. Orochimaru had, by the point Finn knew him from the original sequence of events, produced research that rewrote the understanding of what a human body could be modified to do. The curse seals. The Reanimation Technique's improvements. The work on cellular biology that no one else had the patience or the lateral thinking to pursue.
Tobirama was gone, and recruiting him would have been impossible regardless of timing. Orochimaru was standing in his passage, still evaluating the situation, and had not yet decided anything.
Finn crossed the space between them in a few steps, reached out both hands before Kakuzu could manage an introduction, and took Orochimaru's hands in a grip that was warm and completely unambiguous.
"What a guest! Lord Orochimaru, I've been looking forward to this for a long time."
Orochimaru absorbed this with the particular stillness of someone who had been approached in many ways by many people over the years, but not quite like this. He didn't pull away. Partly because the grip was firm and enthusiastic in a way that made pulling away socially awkward, and partly because the man doing the gripping had killed the Third Raikage and preserved the body, which suggested a level of capability that made awkwardness the appropriate response to any aggressive posture.
Orochimaru had his own history with the Hidden Cloud's strength. Years ago, he had conducted a covert operation against the village — an elaborate sequence of misdirection that had culminated in pushing the previous Eight-Tails jinchuriki into an uncontrolled transformation, then severing one of the Gyūki's horns during the chaos and withdrawing with it before anyone could organize a coherent response.
It had worked. He'd gotten what he came for. But the reason the operation had been designed around stealth and misdirection, rather than direct engagement, was that the Third Raikage had been alive and present in the village at the time. Orochimaru had assessed the matchup honestly and concluded that a direct confrontation was not something he wanted.
The man shaking his hands right now had killed that same Third Raikage and left the body intact enough to put on a laboratory table.
So Orochimaru smiled back and did not act on any of the several thoughts that briefly crossed his mind.
"I've heard a great deal since your name started moving through the world," he said. "I imagine you didn't invite me here without a purpose."
"Of course there's a purpose," Finn said, releasing his hands but not stepping back. "Several, in fact. But the main one is this: I've been following your work for a long time, Lord Orochimaru. Your research direction, your academic interests, the problems you've chosen to pursue — I find myself in complete agreement on essentially all of them. I think we're the same kind of people, you and I. And I'd very much like to walk the same road for a while."
Orochimaru considered this. It was a large statement for a first meeting — sweeping, almost theatrical in its directness, the kind of thing someone said when they were either very confident or very naive. The man in front of him didn't read as naive.
"That's... quite a declaration," Orochimaru said.
"I don't mean to pressure you into anything. I'm completely sincere, and I'm willing to let the relationship develop at whatever pace makes sense." Finn's tone was easy. "But I do want to be clear about where I stand, so nothing is ambiguous later."
He moved on before Orochimaru could respond.
"Two things, specifically, brought you here. First: my blood. You found something in it, otherwise you wouldn't have come this far. Second: we acquired the Third Raikage's body, and I need access to what's inside his head — the Hidden Cloud's classified techniques, his personal methods, anything sealed in the memory architecture. I'd like your help with the extraction."
"The body first, then we discuss the blood," Orochimaru said, settling into the practical frame naturally. "As for payment —"
"Full access to everything we extract. Whatever comes out of that work is yours to study as much as it's mine."
Orochimaru paused.
He had been calculating, as he always did in these moments, what position he was being placed in and what leverage existed on each side. He had arrived expecting to negotiate access to the research — expecting to have to justify his involvement, to trade something for the right to examine the material. The offer that had just been made was more generous than anything he'd prepared for.
It also created a slight social problem. He had been planning, privately, to extract whatever he could and then decide afterward how much to share. That calculation had been based on an assumption that the other party would be holding things back. If the other party wasn't holding anything back then Orochimaru hiding things would be a rather unambiguous act of bad faith toward someone who had done nothing to deserve it.
He was not, by most available metrics, a person of strong moral commitments. But he was a person who disliked being the obvious villain in a situation where he hadn't been provoked into it. It had an aesthetic quality he found unappealing.
"Then we have an arrangement," Orochimaru said. "I won't keep anything from you either."
Finn's satisfaction at this was genuine and visible.
"One more question," Orochimaru said, shifting register from negotiation to something more personal. "If you don't mind — how old are you?"
"Forty-one."
The effect was immediate. Orochimaru's eyes lit with the specific quality of a researcher encountering a data point that confirmed a hypothesis he'd considered too optimistic to commit to.
"As I suspected," he said softly.
Beside him, Sasori's reaction was quieter but noticeable. He had spent months observing Finn and had formed an instinctive impression of the man — capable far beyond what he showed openly, pragmatic, unhurried. Young, he had assumed, given the face and the general manner. Sasori himself was young by the standards of the ninja world's senior missing-nin, and he had always placed Finn somewhere in the same general range.
Forty-one was not that range.
Kakuzu was unsurprised. He had seen enough unusual people over his centuries of operation to have stopped assigning meaningful weight to apparent age. Appearance and actuality had a loose relationship, in his experience.
Orochimaru had begun to say something — his expression had the quality of someone opening a more involved line of inquiry — when Finn put a hand on his shoulder.
"The Raikage first. We can talk about the rest afterward."
Orochimaru closed his mouth, considered the priority briefly, and nodded. "Fair enough. I won't take long."
Sasori, standing slightly to Finn's left, did not visibly react to this, but the line of his posture suggested he had registered the implication that what Sasori had been working on for days would not take Orochimaru long.
They went back into the laboratory.
The Third Raikage lay on the examination table exactly as he had been left. The body was intact. Orochimaru circled it once, assessing, and then stopped at the head. He rested his hand on the Raikage's temple and let his chakra flow in — careful, reading rather than pushing, the delicate kind of intrusion that looked for structure rather than trying to move through it.
The room was quiet.
Finn and the others waited.
After a long moment, Orochimaru withdrew his hand and opened his eyes. "Five layers," he said. "Linked sequentially. Disturbing any one of them trips the others — complete cascade, total destruction of the brain tissue. It's the Hidden Cloud's Secret Five Lotus sealing technique." He turned to look at Finn. "Give me a week. I can work through it."
Finn grinned. "I'll be waiting for good news."
The contrast with Sasori's days of unsuccessful attempts was something no one commented on directly. It existed in the room regardless.
While Orochimaru was still oriented toward the examination table, Finn cleared his throat.
"Incidentally, Lord Orochimaru. I have a strong interest in ninjutsu."
Orochimaru turned back to him. "Is that so."
"Yes." Finn held eye contact. "A very strong interest."
A pause.
"...Yes?" Orochimaru said.
Finn waited another beat, then tried a different approach. "I've always deeply admired the Third Hokage. They say he mastered more ninjutsu than any living shinobi. I assume, having trained directly under him, you'd have had considerable access to that knowledge."
Orochimaru looked at him for a moment.
The meaning had landed. It was not subtle. Finn had the social confidence of someone who had stopped caring whether his intentions were visible, which was a quality Orochimaru found simultaneously irritating and somewhat refreshing — at least there was nothing to decode.
He reached into his sleeve and produced a scroll.
"I happened to bring some material that might be of interest," he said. "For reference."
Finn's face became a study in barely-managed graciousness. "Oh, Lord Orochimaru, really, I couldn't possibly — you've already come all this way, I'm already asking so much of you, and now you're offering gifts on top of everything—"
His hand had already closed around the scroll and pulled it from Orochimaru's grip.
"—it's too much. It really is. I'm embarrassed."
Orochimaru watched the scroll disappear into Finn's possession. He felt something that might have been the urge to apply a precisely targeted strike to the side of Finn's head, managed it professionally, and produced a smile that was completely neutral.