"We have a symbiote emergence in our multiverse."
"Where?"
"Universe SRD-305."
"Isn't that a main timeline?"
"Currently 22.15 units time-northwest of the primary line."
"Should we intercept?"
"No. Let us observe this line and see what occurs from it."
"But it's a main line! It could endanger the rest of the multiverse! This anomaly must be destroyed!"
"Hold your horses! This opportunity could give us a unique understanding of a strange event happening across all of the multiverses!"
"…Fine. But if this gets out of hand, and the events of the line deviate too far, I want us to step in."
"Agreed."
Unlike what science-fiction shows and books depict, space is vast and open, with virtually nothing in between the various celestial bodies save for the occasional asteroid or comet. However, about half-a-light-second from the Earth, a strange mote of light broke that void. The light became brighter and brighter, until it stopped for a split-second and went out, but that interlude was brief, as a huge shining white vortex ripped open and shot out a strange spherical object before collapsing into nothingness.
The city of Neo Domino was always beautiful in the winter. The snow covered the ground, becoming the bane of adults and the object of affection for children, while the constant light snowfall replenished the supply of the white stuff and made everything look beautiful, especially at night. Unfortunately, the season led to below-freezing temperatures, hurting those residents of the city who were not as well off. One of these residents in particular was currently trying to keep warm as she walked alongside the coastal road that connected the harbor to the beaches. She had chin-length magenta hair with two wide bangs, one on either side of her heart-shaped face, large golden eyes, and a Neo Domino Duel Academy girl's uniform underneath several coats and blankets. She also had a blue ski cap over her head, a pair of purple earmuffs, a red and white-striped scarf, green and black mittens, and a Duel Academy Duel Disk. She was holding a Duel Monsters Spell Card in her hand, "Sparks", which, oddly enough, was emitting heat as tiny flames danced around the card. They neither harmed the teenager nor the card, but radiated warmth. The girl sighed as she turned and looked out on the serene water, then she peered up into the night sky. She remembered that there was going to be a meteor shower, and wondered if anyone back in the city, especially her parents, would be watching the event.
The probe hurtled towards Earth as the meteor shower prepared to enter the planet's atmosphere. The probe seemed to pass through without incident, but one of the shooting stars hit the sphere, knocking it off course from its destination in the middle of the Pacific towards a large coastal city in Japan…
The girl saw the meteors rain down on the strait separating Neo Domino from the island slums of Satellite, and thought about the poor unfortunate souls living over there. They had done nothing but slave away, even if their parents were criminals and they were innocent. Sure, she had done things she regretted, but innocent people shouldn't have to suffer for the sins of their fathers and mothers. This brought her back to her own family, and she remembered how they had seemed so happy without her, and she started to cry. Her sobs were heard by a gang passing along on the other side off the street, and recognizing the soprano in the crying, they grinned from ear to ear as they snuck up on the teen.
The meteors rained down all across Japan and the surrounding bodies of water, but one large object in particular was on a direct course for the island off of the coast of Neo Domino. This probe was, in fact, heading for the hideout of Yusei Fudo, a local legend. But the thing inside the probe quivered with anticipation as it sensed all of the people below, and was ready for a new host…
The trio was just about to grab the girl when she spun around. They were startled, but they then resumed their confidence as they surrounded the teen. "Hey, girl." The leader started. "You're out awful late in the cold, cold wind. How about we take you somewhere nice and warm?"
The girl tried to back away. "Stay back. You don't know what you're dealing with." She tried to sound threatening, but it didn't work out the way she intended.
The leader laughed, and pulled out a switchblade. "Hey, I recognize you from the Duel Academy! You're that little freak Aki Izayoi! Your father's quite the politician. Maybe he would reward us if we return his daughter safe and sound, or we could ask for some payment for her safe return!"
The other two nodded, and they closed in, but Aki drew a card from her Deck.
"You like meteors so much? Then try these on for size! Metorain!"
"Good thing you slipped that card in. It might just knock our little friend far enough into the drink that he won't find a host!"
"Actually, I had other plans…"
"Wait…what?"
Several of the meteors were suddenly diverted to Aki's location, rerouting the probe and leading it away from one destination and towards another. The meteors impacted the ground around the gang, causing them to scatter to the four winds, but as Aki sighed in relief, the object accompanying the probes slammed into the concrete a few scant feet from Aki, sending her flying into a mailbox and knocking her unconscious.
"Oh, no you didn't! We agreed on monitoring, not intervening!"
"Yusei would be a terrible host for this thing. His rigid moral compass would easily be corrupted and reset for the worse. Plus, Satellite is more or less pacified. If Yusei became the host, he would war a one-man war against the PSMB, leading to a crisis."
"And Aki is a better choice HOW? She's incredibly unstable!"
"…I have a hunch…"
"A hunch?"
"Yeah…"
"Really? You're risking an entire timeline, and possibly the surrounding timelines, on a f**king HUNCH?"
"You know I have very good instincts. If I think Aki will be better, she probably will."
"Alright. This is Strike One. Strike Three, we get that thing out of this multiverse!"
"Deal."
A black gooey sludge oozed from the wreckage of the probe, and collected itself as it relished in its freedom. Yes! Freedom from the prison we have been in for eternities! Now, to find a suitable host to latch ourselves onto… The ooze moved out of the crater and onto the street, and sensed Aki. Hmm…this human female seems to be the only sentient for a sizable distance. Plus, she is fading quickly from our senses, most likely due to injuries sustained from the impact. We are very hungry, and need a host quickly, and she needs our regenerative capabilities.
If the ooze could smile, it probably would. This will be an interesting relationship.
The slime moved towards the unconscious and slowly-freezing Aki, and reached her boot, dissolving it and replacing its mass with more slime. As the black gunk continued up Aki's legs, the shape of the bulky boot restricted into a sleek design that clung to Aki's form. Her now-slimed pants did the same, becoming a tight rubbery suit. Eventually, the slime reached her vagina, and the black stuff happily seeped into the cunt as the rest of the goo finally reached her spinal cord, and tapped directly into her brain, rousing her from unconsciousness.
What? Where am I? Why can't I feel anything? Aki panicked as she felt nothing but the waves of pleasure emanating from her virgin loins. As she said this, the goo continued up her chest, absorbing her clothing while enhancing her figure. The goo also pushed into her asshole, stroking that as well as her pussy.
We are Venom. Our memory was damaged in the landing, but we do know that we come from another Earth. You have sustained very grave injuries, and combined with the freezing temperatures, you will not live long enough to awaken, unless we help.
But what are you…uhh…doing to me… Aki let out a mental gasp as the waves of ecstasy continued to build. Venom had completed her chest, and was now going down her arms.
We have neutralized your pain receptors, and we are currently absorbing you and integrating you as our host. If you do not accept, we will turn your pain receptors back on, sending you into a coma and making you our puppet. We do not wish for this to happen, but we have considered it.
But…ohh…what will you…ahh…do for me? Aki's will was slowly sapping away, but she had to hold on. As this happened, her Duel Disk was absorbed, but a slight bulge was left on her left arm in its place.
We will give you new strength and powers beyond your imagining. We will help focus your psychic powers to prevent innocents from being injured. We will remake you into an angel of vengeance and allow you the capability to get your revenge on all of those who wronged you!
At this point, Aki's head was now covered, and a mask was starting to form. Aki seemed helpless against the tide of orgasmic joy, but she didn't want any other innocents to get hurt. She never meant to hurt the people she did. All she wanted was someone to love her, and now, this thing was planning on robbing her of any chance she ever had of getting that. She concentrated, and pink blotches started to appear on her new second skin while she tapped into the symbiote's consciousness, delving into the fragmented memories of a young man who found the symbiote, and merged with it, only to realize the true evil of the creature, and threw it away. Enraged, Venom found new hosts, and fought against its former master. Aki decided that she would try to reason with the beast with brute mental strength.
What are you doing? Venom protested as Aki resisted its infiltration of her mind.
I don't want to be an angel of death! I want to be an angel of justice! I want to solve problems, not create them, and you will help me! You are supposed to be a symbiote, not a parasite! So, I will offer you a deal. I will fill your hunger, and you will help me! Otherwise, I will reject you, like HE rejected you, and I will make sure to leave you to die!
Never! We are Venom! We always get what we want!
Not tonight!
The two battled each other, but the symbiote was weak from its long slumber, and eventually caved in, allowing Aki to reshape it.
Please! Spare us! Have mercy! Venom pleaded as Aki subverted its original personality.
I will not destroy you, but remake you as part of me. Aki compromised as it injected her ideas into the symbiote.
After a few minutes of quivering, the woman-shaped blob on the curb finally settled down, and two teardrop-shaped eyes formed on the mask. Aki's body was now greatly enhanced, with her sizes perfected and her curves flawless. Her body was black with pink markings, and the spider symbol on her chest had been reformed into a stylized white rose. Her hair now consisted of six long tendrils behind her head and her signature bangs in front. Her face was pink with a black heart where her lips would be and the usual eyeholes of a symbiote suit. Her hands ended in sharp claws, while her lower arms held a pair of surprises. Her left arm now had a strange organic bulge of a Duel Disk, complete with a deck, while her right arm looked like it had a diamond-shaped greive until she clenched her fist, causing a blade to extend out of the blackness of her rubbery arm. She probed her mouth, as she felt something inside of it, and her jaw extended to reveal a gaping maw filled with razor-sharp teeth. She eventually figured out how to control her jaw so that she could talk normally through the suit.
Aki then explored further down her body, eventually coming to her now-symbiote-coated pussy. She reached a claw in, then two, then three, until she jammed her entire left fist inside, and brutally thrusted the rest of her sexual tension away, finally popping her hymen and letting the symbiote inside of her uterus as she orgasmed several times. As she reveled in her pleasure, she finally cried out. "WE ARE NIGHTSHADE!"