Invasion of the X
The SA-X was one of the few survivors. The original had failed in preventing them from destroying the station, but a fault in one of the explosives detonated too early just as a surge of Beta Waves had exploded from the closest sun-category stars in the region. And now, here she was: trapped within a human, as some creature materialized, and grabbed the bioform it had landed upon, and she had been grabbed as well, its claws grasping her very core. She could feel remnants of X floating outside the human bioform she was, for lack of a better word, sealed into. They were spreading; a few of them were X-Cores, which made her feel... strangely satisfied. But, the SA-X was too weak. It barely survived whatever anomaly had occurred. It found a corner, and ignoring the ankle-high water, curls itself up... Something told her that the human she was now a part of would be her salvation towards survival...
Naruto was four years old when once again, the majority of the adults in the village were trying to kill him. But before he could get through his next hiding spot, a kunai lodged itself into his back and he fell. The kunai was longer than a dagger, and it impaled through his right lung. Naruto gasped and wheezed, as it was difficult trying to breathe with only one lung working, and the other was filling with blood.
"There, we got the demon!"
There was a roar of bloodthirsty approval from the crowds armed with torches, weapons ninja and civilian alike, and the ninja that struck Naruto down had red eyes with three spinning tomoe around the pupil. With a sword, he rams it through the abused child's lower back, pinning him to the dirt through his stomach. Inside Naruto, a pair of glowing eyes snaps open when a flood of the Kyuubi's demonic chakra surged through the malfunctioning seal in an attempt to save Naruto's life.
This power... is energizing me...
She got up, and followed the source, which led her to a larger chamber, where a giant bioform stood, trying to break through a damaged steel cage doors. Its nine tails flickered, waving violently, slamming in all directions.
In the real world, ANBU arrived on the scene, those loyal to the Hokage who followed, killing one civilian with Enma in his Staff Form. A few of the rowdier ninja fought back with deadly force, most of them Hyuuga and Uchiha.
Inside Naruto's body, inside the seal, the SA-X watched with a mad glee was the fox tried to burn away the X, but more would overcome this deadly potent of energy, and turn the same red-orange as the bioform's furry body.
"You will be great energy in bringing me back... I can see this human child... will be the one to eat this world alive, and replace all living organisms with X Parasites," SA-X whispers.
The Kyuubi roared, but its roars got weaker as the X began to attack him from the insides. The demon fox could feel this... this extraterrestrial virus eat away at him, destroying his DNA, and reforming with itself in place.
Blood covered the ground as those who refused were executed.
"Round them up! Kill any who fight back!" Sarutobi shouted, as he rushed to the fallen boy, and pulled the katana as swiftly as he could. As he picked the boy he saw as a grandson up from the pooling blood, he choked as spittle and blood began to leak from his mouth. All activity ceased as Naruto's eyes opened. The Sandaime saw the eyes weren't that of the Kyuubi's, or even Naruto's own cerulean eyes. No, instead they were a solid color of a radiant neon green yellow mix.
A sudden pulse of kinetic energy radiated from Naruto the moment Kyuubi was assimilated by the SA-X, causing everyone to collapse and grasp their heads in pain. Sarutobi with weakened eyes saw that Naruto's hand had deformed itself, and were with long spider-like fingers with sharpened... claws... then they shrank into a normal human hand. From the stomach, the seal faded away as a clear-like gelatin substance oozes forth, before red-orange followed, melting together into a giant puddle. The puddle of ooze grows tall, and soon takes on a human shape. Solidified, the eyes of a tall blonde woman revealed the same neon eyes Sarutobi saw on Naruto's. And she was naked. A gelatinous mass rips from her shoulder, and rises into the air, where from the horizon, ninjas on night patrol saw a swarm of gelatin blobs in yellow, green, red, blue, and gold, swarming from everywhere, converging upon SA-X's location.
In increasing fear, the glob in the air gained a hardened shell, before the mass melts into it, making it grow larger and larger. It grew a body, then four legs. More of the mass forms a rubbery coat, transforming into blood red fur. Nine tails sprout, and then long rabbit-like ears sprout from its head. Like a nightmare, the X have reconstructed the Kyuubi no Youko. But there was now defying alterations to the massive fox demon. First off, the black markings around the face, eyes, and around its mouth had brown thick scales. Rows of webbed spines line along each of its nine tails. Around the paws, the same scaly-like exterior armor acted as armor. A row of brownish gray thick spikes arc around its upper shoulders, while a row of bones now grow from "holes" lining the upper sides of its fox-like body.
The fox's eyes opened, but instead of revealing the eyes those who survived its wrath four years ago, instead saw glowing solid eyes of neon green and yellow, with a hint of red.
"Kyuubi-X," the SA-X commands in a loud, clear, and intelligent tone, "INFECT THEM ALL!"
The fox roars, and swipes its right paw, releasing three large "blades" of glowing energy. It made three wide cuts into the ground. Now screams of horror rang out, but SA-X merely turns around, and walks towards Naruto.
Three ANBU charge the naked woman that "oozed" from the demon brat, but she merely pointed her right arm at them. It was now encased in a green metal-like cylinder. Three quick shots made their heads explode.
Ignoring the screams and the explosions in the background, SA-X bends down, and easily cradles the four year old human child with her left arm.
Not only do I share DNA with... my original... now we have a genetic link... and the X inside the boy... he easily accepts them...
"Only take the strong. Eat the rest."
Three X float down and melt into the dead ANBU. Only one stood up, as X oozed from its skin, and formed hardened black purple armor over the torso, shoulders complete with short hooked spikes, and the katana at its hip was assimilated, and replaced the ninja's right arm. Tentacles of gelatinous X grow, infusing into the blade and making it thicker and wider in width and length. More X Parasites explodes from its back, creating four more clones, as they attacked the captured humans. Many of them ended up as food, just like the Sandaime when one of the clones beheaded him and also cut the staff weapon at its center. The Monkey King was killed as it poofed away.
As Konoha was slowly consumed by the X Parasites, ravaged into ruin by the Kyuubi-X, Naruto opened his eyes.
"Mother..."
The fox released a beam of white energy from its mouth, blowing up the Hokage Tower. It continued, piercing the mountain blowing up completely and also destroying the hidden ANBU headquarters deep in the mountain.
From the flash, the SA-X saw the sheen of the infection radiate from the once-blue eyes, which were now neon green. Naruto's DNA had mutated from the X infection, but it saved him. He was now one of the X.
And the SA-X held the mutated child closer, as new instincts kicked in.
"Mother," SA-X whispers.
It... It felt right...
"That's right, Naruto-X," SA-X says in a soft coo, "I am your mother."
Newly christened name, Naruto-X, gave a weakened smile, before closing his eyes and falling asleep in the SA-X's arm.
As morning came, X Parasites floated around. Some new X-Cores were born as the result of the invasion. The Kyuubi-X melted away as thousands of X split, turning the fox into a smaller form the size of a fully-grown adult silver back gorilla. Konoha was now but ruins. All life in the village was gone. Many X had taken the DNA of the bioforms that existed in the surrounding wild life, assuming their forms and living, spreading their infection trough trickery.
Around SA-X, several of the humans survived the infection, and were part of their army. One such human the X took control was a girl her new son's age, with milky white eyes that also gave of the radiant sheen of the infection, which were ice blue instead of the neon green or yellow. Hinata-X was her new name. Some of the Ninja-X that were lucky to be granted new life, either held the girl's eye traits, or held the eye traits of the red ones with the black tomoe that spin.
"We will make this planet our own," SA-X said, "spread out, and infect any survivors, and eat the rest that we cannot empower."
The few humans that survived, and were not ninja, ended up like the human researchers on the station; mutated slime husks of their original forms. They slither away, as the Ninja-X vanishes using the power of the ninja skill teleport.
Only Hinata-X remained, standing in a protective manner by her son, Naruto-X.
And this time, none of the Metroids can stop us on this planet...