Hiraishin - Sakumo/Minato/Tobirama -POV Tobirama
He snarls, his senses making it clear the last of his students was safely away from the Kinkaku, and pours the small portion of the Hatake chakra he possessed, chakra he’d never found a good use for (beyond making it easier to master Raiton), but all he had left into one of his Hiraishin Daggers. He intended for it blow-up, to take the Kinkaku with him, but that’s not what it does. Instead, the world whirls around him, the raiton killing the Kumo nin, and he arches, howling as the raiton courses through his veins as well, back almost snapping as it scorched every nerve in his system before stopping abruptly, just as he slammed into something.
The world is fuzzy, colourless, his senses blunted by the overloaded Seal, but he finds his footing. On four feet? He’s confused; he has Hatake blood, but he’d barely had more than a thimbleful of their chakra, had always thought it just responsible for his sensory abilities. He’d never dreamed he might be as capable of shifting as the wolf-nin were; assumed that they’d checked and that was why he’d been left with the Senju rather than claimed back as the inter-clan treaties invariably allowed for those with kekkei genkai. He follows his nose to water, and eyes himself in the smooth surface, not surprised at what he sees; his grandmother’s pelt, when she could still shift, had been pale, so it made sense for his own to be, too. His chakra’s low; low enough that he can’t figure out how to undo whatever the overloaded Seal had done.
His best hope for that was Konoha; several of his Hatake kin had chosen to den there long enough to raise cubs, and they would be able to talk him through resuming human form. Or Mito would be able to unspool the Seal he’d used, especially if he let her see the full extent of his notes on the Hiraishin. That decided, he lopes towards the bonfire of Fire chakra - most of the residents of Konoha had Fire natures - hopeful to find his cubs and some sort of assistance with his current predicament.
Konoha isn’t how he left it. The way he’d approached the village should have brought him in through Hashirama’s private gardens - terrifying, but responsible for getting them through two truly awful winters, even if the harvest had required shinobi skills - but instead, before he’d even reached the garden boundaries, enforced by his seals, he finds himself in a training area. A training area that hadn’t been there when he’d left on the mission, and one that was currently occupied.
By a tiny blond that didn’t seem to have any clan blood - or at least any that was supposed to be in Konoha at the moment - wearing the leaf’s hitai-ate, all its hidden loyalty Seals intact. And experimenting with Hiraishin. Or at least a version of it, though he didn’t seem to be able to jump more than twenty-feet at a time with it. Wind natured; that might be the problem with the Seal, especially if the blond wasn’t used to using yin release in combat. He slinks forward, curious - this wasn’t an illusion; his incorporation of Seals into the hitai-ate had gone undetected so far; even the Uchiha hadn’t spotted them - and intent on gathering more information.
Which was probably a mistake. He thought he’d gotten used to being a wolf during the run back to Konoha - he’d even managed to catch and kill several rabbits without using chakra - but apparently, that hadn’t been all of what he’d needed to get used to. The blond smelt far too tasty, and then he’s spotted, and the teen tries to use the still incomplete Hiraishin and he pounces before he can really think about what he’s doing, the white Hatake chakra flashing out, and the teen beneath him moaning in unconscious need, chakra running wild through his system, yang and fūton spiking erratically and twining with the Hatake chakra in a way that has him shivering and howling, arousal chasing what chakra he’s scraped together during the run.
He sinks into tight heat, unable or unwilling to do anything other than follow his instincts, and ruts, desperately; the scent of arousal at least tells him that the shinobi he’s mating is enjoying himself as he chases his completion, the wildly flaring fūton and yang release pooling around his cock, warming him through rather than rejecting his use of the slim body beneath him. He finds his completion with a howl, unfamiliar anatomy flaring, locking him close to the body beneath him despite his dawning awareness of exactly what he’d just done. Before he can overthink things, his knot is loosening and he’s slammed into by another, larger wolf, comfortingly familiar, and he submits, unfamiliar instincts still riding him, only to watch the blond teen be rutted into by the other Hatake. (A cub curls up next to him and he’s confused; Sakumo had only been a cub when he’d left Konoha with his students on the mission that had blown up on them, and now Sakumo was an adult, with a cub of his own? Something had gone wrong with the Hiraishin, clearly. Perhaps the Hatake chakra had overloaded the time component of the Seal.) He grooms the cub, coaxing him into turning away from where the pretty blond bitch was being mounted and knotted by the cub’s father; clearly Sakumo had mated and lost his mate in his absence.
The cub nuzzles into him, and it’s warm and comforting, and wisps of Hatake chakra wrap around him, and he barks a laugh as he realises the cub is attempting to coax him into changing forms. He doesn’t want to; doesn’t want to face what it means that Sakumo is grown, nor that he’d taken and mounted one of the shinobi that were his to protect without courting them properly. But Sakumo shifts back, cradling the pretty blond bitch - he smelt so good, so tempting; he wanted to mount him again and again, but he had a cub curled in close to him, and the soft milky scent of Sakumo’s cub killed his arousal - and sighs. “Kakashi, we need to get your sensei somewhere a little more private; he attracted the attention of one of our wild cousins.” The cub flopped on him huffs quietly. “Yes, I know I’ve been stalking your sensei, too, but he’s been doing a very good job of mothering you and I would have asked, first.” The cub snorts, and shakes his head, and Sakumo sighs. “Cousin, if you’re not going to change back, then at least pick up my cub and follow me, -” he huffs again, but there’s a definite ring of ‘alpha’ in Sakumo’s voice, and it forces him to push to his feet and catch the cub up by his scruff. “- can you still shunshin, cousin, or do I need to keep myself to a run?”
He shapes his chakra into the form requires for shunshin, and almost yelps and drops the cub he’s carrying when he succeeds. Sakumo laughs and shunshins, and he follows to a small, very Hatake compound abutting the training area. He follows Sakumo into the compound, and into the house, Kakashi still scruffed, and the Hatake alpha sighs and puts his pretty blond bitch down on a futon, shaping a ninjitsu of some sort. The blond immediately smells less enticing and settles fully into sleep, and he drops Kakashi and whines.
“I’m going to give you the benefit of the doubt, cousin, and assume you’re mission born, and that’s why you lost control. And why you’re not changing back.” He dips his head, not liking the way that Sakumo’s chakra was pressing against him. “Kakashi, I want you to go and ask Jiraya and Kushina to meet us for lunch; we’re going to need both of them I think. And see if Mito-obaa-san will join us if she’s willing. Can you do that for me, cub?” Kakashi nods, and then barks, making Sakumo laugh. “Sure. Reporting your sensei as ill to the jounin station makes sense, too. This is going to take a while to sort out.” Another bark from the cub makes the alpha snort. “Go terrorise the Uchiha, pup. But if you get your tail singed -” the cub huffs, and vanishes, leaving him alone with the Hatake alpha.
Chakra, intense and blindingly white curls around him, Sakumo’s fingers flashing through a long sequence of hand-signs that has fire scorching along his veins and his body changing shape even as he tries to resist.
“Niidaime?!” He collapses to the ground, every muscle on fire and blood pooling beneath his body from the wounds from the Kinkaku force, and Sakumo curses, kneeling with iryou chakra coating his fingers. “Don’t you fucking dare die on me; nobody’ll fucking believe me if you’re not there to explain how Minato ended up a Hatake breeding bitch; we’re supposed to have given up the practise.” Sakumo’s hands burn where they press against his skin, and he whines. “People will think I snapped and the punishment will be death; especially as Minato is a candidate to be the Yondaime Hokage.” Breathing comes easier as the wounds heal. “Given you’re supposed to have been dead for close to three decades, Tobirama-itoko, what happened?”
“Overloaded a Hiraishin Seal with what Hatake chakra I had.” The words are hoarse, and he curls his fingers, trying to reaccustom himself to human form. “Think it broke the time portion of the Seal. Woke up a week ago in wolf form. Came home for help. The blond - Minato? - was using something derived from my Seals and smelt so good. Pounced. Body was thinking for me.”
Sakumo sighs and rolls his shoulders. “I didn’t realise he’d gotten it working. I can see where that would have felt like an acknowledgement and permission to our kekkei genkai, too. You didn’t teach that to any of the cubs you trained, did you?” He shakes his head. “And from what I remember, you never shifted before whatever happened, did you? I know the clan history say the reason your kaa-san was willing to mate Butsuma was because she couldn’t either -” He hums in acknowledgement. “- so I think that we can cover you under the clauses in our Clan treaty that account for our wild and mission born cousins. You might have to shake your foster cubs by the scruff until they acknowledge that they exist, though.”
“Foster cubs - is Hiruzen still Hokage? He must be, you said Minato is a candidate to be Yondaime.”
“He has Koharu and Danzo as advisors.” He winces; he’d have preferred Kagami to be advising Hiruzen if he’d had to have picked one of them. It would provide balance, and keep the Uchiha from feeling imposed upon to be one of the voices whispering directly in the Hokage’s ear. “Not your choice of which of your cubs to be village alphas, itoko?”
“Given that despite Madara’s insinuations I quite liked the younger Uchiha, I’d have preferred Danzo to be a long way away from Hiruzen. His response to Kagami’s Sharingan was … erratic.” Sakumo sighs and facepalms, and the blond on the bed squirms, moaning. “Is Minato okay?”
“The chakra you fucked into his system is going to keep burning through his veins until he’s full of as many pups as he can carry. The only way you can relieve it is to mount him again, itoko. And keep mounting him until he stops smelling like a fertile bitch.” He makes a small whine at the back of his throat and moves towards Minato, only for Sakumo to step between them, making a small unconscious snarl. “Sorry. I’d been trying to figure out how to court him, -“ Minato reaches for them blindly, and Sakumo huffs. “- do you have enough control now so we could share him, itoko? As we knotted him as wolves, if you do, we could share him as humans. But that only works if you aren’t going to spontaneously shift again and try to rip my throat out.”
“I think I do. You’re alpha -“
“- get on the futon then. You can be on the bottom; it’ll help with the temptation.” He complies, tugging the squirming blond over his body, and onto his cock; Sakumo snorts and joins him, fingers pressing into the blond, testing the way he’d been stretched by their knots, and then pushing his cock inside him as well. It makes Minato ridiculously hot and tight, barely suitably slick for what was happening, but from the ripples and the desperation in the lithe blond’s chakra, he was comfortable enough. He has little leverage to rut into the slick tight hole he’s buried in - and fuck, the instincts his broken Seal had awoken were vicious, because he’s desperate to fuck in a way he’s never been, even at the height of puberty. But Sakumo takes mercy on him, rolling his hips, stroking their cocks against each other inside their pretty breeding bitch, and he makes incoherent sounds as his hormones take back over again. He can feel the white chakra gathering under his skin prickling almost painfully as his wolf tried to get out, to take the blond again, to knot him and he fights the urge, snapping at his alpha before giving in and biting Minato. The blood and the convulsive orgasm from the blond soothes his wolf again, and his alpha chuckles and keeps moving, driving him half crazy.
When the knock on the door comes, the three of them are sprawled on the bed, his hormones far closer to sated, bites ringing Minato’s neck, and Sakumo amused. He’d lost count of the number of times he’d fucked the lithe blond, even shifting twice and knotting him again, with his alpha’s hand on his scruff to prevent him taking it to far. He reaches out with his senses, huffing softly at the feel of very familiar chakra; that was Mito-nee, and Kakashi-kun, and he probably should pretend to be a human rather than a rut-hungry wolf.