Minato was born on a night so ordinary that Karan spent years afterward feeling faintly insulted on the universe's behalf.
No storm. No omen. No chakra-heavy silence pressing against the windows the way Karan had half-expected, some leftover instinct from a life spent reading about fated children arriving under dramatic skies. Just his mother's voice through the wall, tired and furious and alive, and then, eventually, a thin, outraged wail that Karan would recognize anywhere, in any life, because he'd heard a very similar one come out of his own throat four years earlier.
He was sitting on the stairs when his father came to get him, forbidden from the birthing room by every adult in the house and too stubborn to actually go back to bed. Hiroshi looked like a man who had aged and un-aged several times in the last few hours — hollow-eyed, grinning helplessly, hair somehow messier than usual.
"Karan-chan." His voice cracked on the second word. "Come meet your brother."
Later, Karan would try to describe the feeling of holding Minato for the first time and fail every single time he attempted it, in either of his two lives.
It wasn't recognition, exactly — the wrinkled, red-faced, indignant bundle in his arms looked nothing like the calm, capable, impossibly steady man Karan remembered from a screen decades and one entire death ago. It wasn't quite grief, either, though something old and complicated moved through his chest anyway, some tangle of a future he'd watched happen once already and was now holding in his own two arms, warm and much too light and completely unaware of any of it.
Mostly it was simple. Stupidly, overwhelmingly simple.
This is my brother, he thought, sitting very still so as not to jostle the baby his mother had just placed against his chest with a level of trust that still startled him. This is Minato. And he is not going to die at twenty-four with a seal-scarred stomach and a baby he barely got to hold.
"Mind his head," Emiko murmured from the bed, voice wrecked with exhaustion and entirely too pleased with herself. "There you go. See? He likes you already."
Minato, for his part, opened one unfocused, dark blue eye, seemed to consider the enormous responsibility of having an older brother, and immediately went back to sleep.
"Strong first impression," Karan said, and his father laughed so hard he had to sit down on the floor.
The years that followed did not feel, from the inside, like the beginning of anything world-shaking.
They felt like years. Minato learned to crawl, then walk, then run everywhere at a speed that made Emiko mutter darkly about payback for her own childhood energy. Karan turned five, then six, trailing his little brother around the yard with the specific, watchful patience of an older sibling who has decided, quietly and without telling anyone, that his entire personality now includes keeping this particular person alive.
He did not push. That was, he'd decided early on, the single most important rule he was going to set for himself — not to treat Minato like a project, or a plot point, or a legend who simply hadn't caught up to his own reputation yet. Minato was four years old and afraid of the dark and obsessed with a particular battered wooden kunai their father had carved him, and Karan intended to let him be exactly that for as long as the world allowed it.
But he watched. He noticed, the way only someone who'd read the ending already could, the small things that lined up with the story he remembered — Minato's uncanny footwork even as a toddler, chasing fireflies with a balance that made shinobi guests at the house exchange glances over his head; the easy, guileless friendliness that would one day make an entire village follow him without question; the way he flinched, just slightly, every time Emiko raised her voice, a small, unremarkable habit that meant nothing at all yet, and would mean everything later.
The Nine-Tails was out there somewhere in the world, sealed inside a woman Karan hadn't met yet and wouldn't for years — a woman whose name he knew, whose face he didn't, and who was, as far as either the Namikaze household or the rest of Konoha was concerned, still just another child growing up somewhere in the village, entirely unaware of what she'd eventually mean to this family. Karan had time. He kept telling himself that, the way you tell yourself anything you need to be true.
Karan's own training, in those years, stayed carefully, deliberately mundane.
He'd made a decision, back on that rainy afternoon when the System first laid its rules bare, and he held to it with a discipline that surprised even him: no shortcuts before Genin rank. No frantic assumption that six-year-old chakra reserves and un-signed muscle could carry a decade of accelerated ambition. The Chamber's door was still, technically, closed to him in any meaningful sense — a promise, not a tool — and until it opened for real, the smartest thing he could do was exactly what any ordinary Academy-track child in this village would do.
He trained his body. He learned the Academy fundamentals early, at his father's kitchen-table insistence, the same slow way any other clan child might: chakra control exercises that left him dizzy and irritable, taijutsu forms drilled until his legs ached, the specific, humbling frustration of failing a leaf-sticking exercise for the eleventh day running while his four-year-old brother wandered past and stuck his own leaf to his forehead by what appeared to be pure accident.
"That's not fair," Karan told him, flat and unimpressed, and Minato beamed up at him with the single-minded, uncomplicated joy of a little brother who has just, for the first time in his life, done something his older brother couldn't.
It was, Karan reflected, an extremely accurate preview of the next several decades.
The letter arrived on a spring morning not long after Karan's seventh birthday: formal Konoha stationery, the leaf-and-fire seal stamped neat and official at the top, addressed to Namikaze Karan regarding Academy enrollment for the coming term.
His father read it over breakfast with the particular quiet pride of a shinobi parent watching a child step, however slowly, onto the same path he'd walked himself. His mother read it twice, out loud, mostly, Karan suspected, to watch his face while she did it.
Karan read it exactly once and felt something in his chest settle into place like a key turning in a lock that had been waiting seven years to be used.
Academy Student. It wasn't Genin. The Chamber's door, when he reached for it that night out of habit more than expectation, still returned the same patient, unmoved message it always had — ratio locked, full activation at Genin rank — and some small, impatient part of him deflated a little at the confirmation.
But it was closer. It was the first real rung on a ladder he'd been staring up at since the day he woke up screaming in a body that wasn't his, and for the first time since then, the distance between where he stood and where he needed to be didn't feel quite so impossibly, hopelessly far.
Okay, he thought, lying awake that night listening to Minato's small, even breathing through the wall between their rooms. Academy first. Everything the ordinary way, first. And when the door finally opens for real —
— I am going to make every single day of it count.
End of Chapter 3
Coming in Chapter 4 — The Academy Floor
Karan's first day at the Academy, and his first real look at the other children whose names he already knows from a life he can never explain — among them, a shy, dark-haired boy with an unmistakable clan crest, and the beginnings of friendships and rivalries that were never supposed to include a Namikaze standing at their center.