**I.**
For the better part of a year, Butsuma had operated on an assumption he'd never once thought to question: that the squads harrying his storehouses, bleeding his patrols, and vanishing across the western border were Uchiha, plain and simple, another front in a war old enough that no one alive could remember its actual beginning.
It was Hikaru, methodical as ever, who first suggested the assumption might not survive close inspection.
"Look at this again," he said, laying three reports side by side across Butsuma's desk one evening, each detailing a different raid separated by months. "The taijutsu described by our surviving guards. Uchiha favor close, precise strikes, built around their eyes and their fire affinity when they commit to hand-to-hand at all. This isn't that. Look at the wound patterns — tearing, not cutting. Raking strikes, low stances, movement more suited to a pack coordinating around a single target than the disciplined pairs Uchiha squads typically favor."
Butsuma studied the reports again, more carefully this time. "You think we've been fighting someone else's shadow."
"I think," Hikaru said, "that we assumed Uchiha because Uchiha is the answer this war has trained us to reach for first, and I'd like to know whether that assumption is costing us the chance to actually stop these raids rather than simply weather them."
It took another four months of careful work to answer the question properly — captured prisoners who gave up little beyond fragments before their bodies simply failed them from wounds no physician could fully explain, a tracker who followed a retreating squad three days past where any sane raiding party should have dared go, and finally, a single survivor, taken alive and questioned at length, who broke not because of anything done to her, but because she no longer had anything left to protect by staying silent.
What she told them reshaped the entire picture.
---
**II.**
"They call themselves Rōgetsu," Hikaru reported, standing before Butsuma with the particular grim stillness he reserved for news he knew would land badly regardless of how carefully he delivered it. "Or they did, before there was almost nothing left of them to call anything at all."
Butsuma set down the brush he'd been holding. "Explain."
"A minor clan, by the old measure of clans — small enough that neither of our houses would ever have crossed paths with them under ordinary circumstances. Territory in the far west, in the hill country that hasn't got a name yet beyond what the locals call it among themselves. Matriarchal line, three main bloodlines within it, distinguished — according to our prisoner, and I've no reason yet to doubt her — by eye color. Blue, red, green. A wolf-based taijutsu tradition unlike anything either of our clans practice, built around pack coordination rather than individual duels, which explains the wound patterns we couldn't place."
"How large a clan?"
"Under five hundred, by her account, even before whatever happened to them. Small enough that outsiders barely knew to fear them, though by every measure that should matter, they ought to have been feared plenty. Stronger physiques than most ninja clans manage, greater raw chakra potential per capita than either of ours, if her claims hold true. Their only real limitation was numbers — and their numbers ran unusually skewed even before the killing started. Males barely a third of the population. Females the rest."
Butsuma frowned slightly. "That's an unusual weakness for a clan to carry into a war."
"It's the weakness someone else decided to exploit," Hikaru said, and here his voice dropped into something colder, more careful. "According to her, the order to remove them came from Lord Kagerou — not the Fire Daimyo himself, but a noble whose holdings and standing place him well above most lords in this province, close enough to real power that his word carries weight few would think to question. The task of carrying it out fell to the Uchiha. Whether by contract, by obligation, or by some older debt between his house and theirs, I couldn't get her to say with any certainty, and I've sent for confirmation through channels that don't rely on a single frightened prisoner's word."
The room was quiet for a long moment.
"So the Uchiha did this," Butsuma said finally.
"The Uchiha executed it," Hikaru corrected, precise even now. "I don't believe that absolves them of it, and I'm not asking you to feel otherwise. But it matters, for our purposes, that the order came from above them, not from any quarrel of their own making. What's left of the Rōgetsu — and by her account, it is very little, a handful of survivors scattered and stripped of everything that once made them a clan — didn't come after us out of some grievance against the Senju specifically. They have no grievance against us at all. They're being used."
"By whom?"
"That," Hikaru admitted, "is what I don't yet have a clean answer for. Someone found what remained of them after the Uchiha finished their task, and offered them the one thing a people with nothing left still wants badly enough to accept any terms for — purpose, and perhaps the promise of eventual revenge against whoever they're told to believe is responsible for what happened to them. They're being pointed at us. Disposable. Expendable enough that whoever's directing them clearly doesn't expect, or perhaps even want, most of them to survive the raids they're sent on."
Butsuma sat with that for a long time, turning the shape of it over. "We're wealthy," he said slowly. "Compared to a clan that no longer exists in any meaningful sense — compared to nearly anyone left standing after a purge like that — we're wealthy enough to bleed a little without anyone particularly caring, so long as it keeps happening quietly enough."
"That would be my guess as well," Hikaru said. "Someone benefits from the Senju absorbing small, costly wounds indefinitely, delivered by an enemy no one can properly negotiate with or retaliate against in any meaningful way, because there's nothing left of them to retaliate against. It's a clever use of a tragedy, if I can call it that without turning my stomach."
"Can we stop it?"
"We can stop the raids, in time, now that we understand what we're actually facing rather than fighting the wrong enemy in our heads." Hikaru's expression didn't soften. "Whether we can stop whoever's directing them is a different question entirely, and one I don't have an answer for yet."
---
**III.**
Five days before his son's fifth birthday, Butsuma allowed himself, for perhaps the first time in longer than he could easily account for, a few unguarded minutes doing nothing at all.
He sat on the veranda outside his study as the light went gold and long across the compound, a cup of tea gone lukewarm at his elbow, and found himself doing the arithmetic almost without meaning to. Five years. Five years since a night he barely remembered clearly anymore, since a conversation with Hikaru that had reshaped the rest of his life more thoroughly than any battle he'd fought since. Five years, and the boy he'd never been permitted to claim was, by every report that reached him secondhand and carefully filtered through Hikaru, growing into exactly the kind of clever, stubborn child Butsuma suspected he himself had never quite managed to be.
He wondered, briefly, what the boy looked like now. Whether he favored Butsuma's own features or Iori's more. Whether he was kind, or sharp, or both in whatever measure made a person interesting rather than simply difficult. He wondered about Iori too, in the careful, distant way he allowed himself to wonder about her these days — whether she'd found something like peace in the household he'd handed her into, whether the resentment he suspected she still carried toward him, however quietly, had softened at all with time, or simply settled into something she'd learned to live around.
It was, he knew, an indulgence he rarely permitted himself. He set the tea down, unfinished, and told himself he'd allow the thought five more minutes before returning to the mountain of reports waiting on his desk.
He got perhaps two before a runner arrived at the edge of the veranda, breathless, with word that Hikaru requested him urgently — confirmation had come through, at last, on the matter of Lord Kagerou.
Butsuma rose without hesitation, the brief warmth of the last several minutes folding itself away as easily as it had arrived, replaced by the familiar, practiced weight of duty reasserting itself. Whatever peace there might have been in wondering about a son he couldn't openly claim would have to wait, again, for another evening that might or might not come.
It rarely did, these days. He had long since stopped being surprised by that. He simply straightened his robes, and went to hear what Hikaru had learned.