Becoming Symbiotic #1

Story by hippo1263 on SoFurry

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#1 of Becoming Symbiotic

Some older writing that I'm porting here from FA, hope you like it!


Spring finally arrived and like many young people in the area, this gave you the motivation to start getting back into running. The cloudy weather almost stopped you from biting the bullet and starting the habit, but you managed to convince yourself. Running late at night was the only way you managed to make it fit your schedule though. You couldn't see people around your nearby park, only lampposts and shadows. In a way you preferred the colder air that the night brought for your cardio. Your lack of musculature made you feel better when less people saw you too... You notice rain starting to pour slowly on your shoulders and arms, giving you small tingles. You start to increase your pace a bit to avoid getting all wet by the time you reach your apartment. Suddenly you glance at your arm and stop, an ominous feeling fills you to your core as you see the droplets covering your arms is a pure, solid black. You try to shake the liquid off your arm with your hand but it only spreads it around, like oil. The rain then start to pour heavily, out of nowhere. You curse in disbelief, you knew your city had a pollution problem, but this was something else. You could see this dark liquid slowly cover you all over. You sprint to a nearby tree to find cover from this awful rain, your legs burning with effort but adrenaline pushes you to the tree in no time. You suddenly collapse at the base of it, exhausted. You feel completely drenched in the stuff. Your waist and chest start itching as the accumulated goop in your shirt and shorts press on you. It feels strange, like this liquid is moving by itself along your body. You breath heavily as you feel it crawling towards your waist. Suddenly, you feel a sharp hit of pleasure on your crotch, you moan but feel startled by this inappropriate reaction. "wh- what's happening to me?" You whisper as you feel the liquid moving around your crotch. You take off your shorts and boxers in a panic and gasp at the sight of your member. It's completely drenched in goop and you can feel it moving along your rod. Terror takes you over and you immediately try to push the goo away from your member with your hands. The instant you make contact with your cock, you are stung with unearthly pleasure. For a moment, you forget how weird and terrifying this is, you relish in the feeling. You loudly moan and your hand wraps around your dick instinctively. "why does this feel so gooooood?" You ask as you see the goop moving all around your penis. The pleasure vastly outweighs the fear you initially felt as you slowly wrap your hand around your cock and start jacking off. As if to respond to your action, you feel the goo hit you with the biggest jolt of pleasure yet. You scream in pleasure, your cock churning so much blood it starts growing bigger. You feel your fingers getting pushed further and further apart as it expands to monstrous proportions. You moan and moan as your previously 6 inches cock reaches 10 inches long and 4 inches thick. The sight of your dick turning into this huge slab of meat and power turns you on more than ever. As if to respond to your arousal, your balls suddenly start growing. It looks like they are absorbing the surrounding goo, like a sponge. They grow bigger and bigger until they get bigger than baseballs. You give a hearty moan as you massage your gigantic cock and balls. You feel yourself reaching your breaking point, you roar like never before, cumming shot after shot after shot. This pleasure is beyond godlike. It keeps going almost two minutes, you feel your cum getting thicker and thicker as your balls embrace this symbiote. You see your seed going from white to a dark grey to finally a pure jet black, darker than the rain that corrupted you. Finally you stop cumming, your mind completely blank, you soon pass out from exhaustion. You see yourself surrounded by a black void. You are completely naked but clean of any black goop. You look down and see your dick and balls back to their original size. You suddenly hear a voice in the darkness. Joiiiin ussssss You feel a wet tentacle frot along your dick. It goes around the shaft and shoots thick black goo all over it. You feel your body respond to the contact with the liquid, like the wave of heat from a warm bath. Your cock begins to absorb the goop and starts growing. We will become majestic You shiver in pleasure as your cock and balls grow together. All you want is more, more lust, more size, more power! The tentacle now opens up like a flower blossoming and takes your whole cock inside its maw. Your moans fill this dark void as the tentacle starts sucking. You suddenly hiss in surprise as the tentacle shoots goop inside your urethra. We will become the strongest! You roar as you accept this gift. The goop entering your dick spreads inside your body. Your waist grows larger and thicker, abs bursting from you until you have a huge 6 packs. Your pecs explode in growth almost 6 inches forward. Juicy fat nipples poke out of them, urging to get sucked. You now scream in pleasure as your arms get thicker. Thick black veins cover your biceps as they grow as big as bowling balls. "YES!!! TURN ME INTO A GOD!!!" You scream as a wave of black goop hits you. You wake up and instantly feel the connection with the symbiote now living inside you. You also immediately notice the changes to your body. You are huge, your muscles are bigger than those of a professional bodybuilder. You flex and kiss your massive biceps, getting hard at the sight. Then you notice the changes to your dick and balls, this turns your grin into a devilish smile. "Oh yeeesss" you whisper to yourself as you grasp your now 14 inches long and 5 inches thick monster cock and shudder at how sensible it is. Deep moans come out of you as you slowly start to masturbate. "This is amazing." You whisper as you pinch one of your nipples. "HMMMMM" You gasp at how inhumanly sensible it has become. "Feels so gooooood" The symbiote then flashes images of monstrous black figures into your mind each bigger and stronger than your current body. This makes you even more aroused. You are now furiously jerking your monster cock while licking the tip. You notice your tongue changing to a long slender red tongue reaching up to 3ft long. This turns you on as you coil it around your cock, keeping it wet and hot. Deep black precum starts oozing from your dick. Once the cum touches your pecs, you can feel the muscles absorbing it. This makes feel them grow a little, making you groan. "HMMMMM Moooore" You moan to the symbiote. You then feel your skin changing as thick black goo ooze out of your pores, covering your body. This time though, you love it. Your teeth become monstrously sharp and your eyes become twisted alien white patches. You grin at your body as your pleasure peaks. " GIVE ME MOOOOORE" You scream to the symbiote who gladly feeds its hungry host. You feel you muscles growing even more, pushing the limit of what is humanly possible. Your shoulders spread wider as more beef is packed on your upper body. You feel your pecs pushing your symbiotic skin as they inflate up to your chin. You arms become longer to make room for your booming biceps. They grow and grow until they get bigger than a human head. Your abs grows to a huge 8 pack, each ab strong enough to break steel. Your legs also grow longer and wider to support your hulking frame. " YEEEEESSSSSSS" You scream in pleasure, totally in love with the symbiote. " WE ARE ONE!" You cum in delight of your new powers. Blast upon blast release from your dick as you drink as much of the corrupting goo as you can. " HMMMMMMM" You moan as you feel yourself growing in size. After 5 minutes of non stop cum shots, you reach 7ft tall with a physique that would put the Hulk to shame. " Time to spread our gift" You say to the symbiote, flicking your tongue. You wonder who you should infect first.