It began with nausea.
Sakura threw up at dawn.
Sasuko nearly fainted during training.
They didn't tell anyone at first — not even Naruto — but both felt the shift.
The fullness.The stir.The pulse deep in their wombs that whispered, you might have it.
And then came the question.
If they both did…
Who had it first?
They went together to the Seal Room.
A sacred chamber layered with chakra scripts drawn from Uzumaki fertility rites, glowing faintly under the moonlight sky above.
Naruto was already there.
Bare-chested. Quiet. Watching.
They didn't ask him to decide.
They were going to show him.
The test was simple.
Both girls would sit within the seal's ring.
Channel their chakra deep into their wombs.
The circle would flare around the one whose pregnancy was confirmed — and the stronger flare would indicate which took first.
But neither wanted a quiet answer.
They wanted to prove it.
With their bodies.
They stripped together.
Tossed their robes in opposite corners.
And stepped into the ring.
Naked.
Glowing.
Wet.
They faced each other first.
Foreheads pressed.
Hands to hips.
And slowly, they grinded.
Pussy to pussy.Warm folds sliding together.Juice smearing down thighs.
Sakura's breath trembled. "I feel it. I know it's mine…"
Sasuko moaned. "Then prove it…"
They kept grinding, faster now — chakra pooling between them, their clits catching with every slow, slick thrust.
The seal beneath them began to flicker.
Naruto's cock hardened instantly.
The light pulsed pink around Sakura.
Then crimson under Sasuko.
Then both.
Flickering.
Competing.
Surging—
Until the entire seal exploded in golden light.
They came together.
Screaming.Soaking the ring.Clutching each other, thighs trembling, hearts pounding.
And the seal?
It didn't choose one.
It marked both.
A soft spiral of chakra flared around Sakura's lower belly.
A matching one glowed beneath Sasuko's navel.
They weren't rivals now.
They were sisters.
Mothers.
Carriers of the Fox's flame.
Naruto stood, hard and stunned.
They crawled to him.
Sakura licked his tip.
Sasuko kissed his navel.
And they whispered:
"Four children now, Naruto-kun…"
"...and we're just getting started."