Dad’s Secret Room
A single fluorescent light illuminated the chipped and scratched wooden bench, casting a fuzzy white circle on its surface. In the middle of this halo was a rectangular glass container, looking almost like a complicated, reinforced fish tank. A man in his late thirties, with a scruffy beard and loosened tie over a crumpled shirt, approached from the dusky room and tapped on its sides. 
Hidden close to a corner of the container, something that looked like a very dark shadow started to quiver and shake and pull together into an inky-black blob. Slowly, as if tired, it slithered towards the man’s tapping finger but stopped right behind the glass.
The man gasped. He bent down to look at his latest discovery, still wondering what it might have been, even after two weeks of keeping this living thing—was it a living thing?—in his basement, away from the prying eyes of his two sons. It’s a good thing he had a scientific background. 
He checked his watch, bent down to get something from under the bench, and started writing on an overfilled notebook:
Creature still reacts to vibrations upon tapping the glass. 
Putting the paper aside, he looked at the amorphous thing, his breath fogging up the glass. 
Robert had found the black blob on the way back from work, driving along a forgotten backroad that he often used as a shortcut to get home. Squinting against the setting sun, he had barely seen the little plume of white smoke coming from the side of the road. Against his better judgement, Robert decided to stop the car and inspect. He found a small object that looked exactly like any rock, except for its perfectly round shape. Something black and sticky and slightly glossy oozed down a crack in its middle. Robert decided to take a sample into an empty mason jar he had in the car, compelled by curiosity and excitement over finding out something truly amazing. Only after arriving at his quiet, suburban home, did the man realize that the black ooze was moving and twisting slightly, alive. 
Robert was pretty sure he had discovered a new for of life. 
He immediately improvised a lab in his basement, made a “cage” for his creature, and secured the door to make sure that his kids wouldn’t sneak in.
And now, he was about to carry out his first major test.
The main opening to the creature’s cage looked a bit like an airlock, with a small space between an outer and inner door. He opened the outer door, put in a small drop of rabbit serum stolen from his lab, opened the inner door and closed the outer one. 
The amorphous creature reacted almost immediately. It slowly stretched itself towards the drop of serum, looking momentarily like a disfigured octopus dragging itself on its tentacles. One of these tentancles reached the organic substance and sucked it up like a straw, incorporating it smoothly into the creature’s mass. The black blob jiggled and quivered as it reformed into a single ball, looking noticeably larger. 
For a nearly a minute nothing happened. Nonetheless, Robert barely took his eyes off the creature as he scribbled on his notebook. Then the blob moved and stretched into an ovoid shape, that quickly grew four stubby protuberances from its bottom. The blob hoisted itself on these protuberances as they reshaped into small animal legs, while its frontal end grew into a rudimentary head with two long ears growing from its sides. Amazed, Robert stared his eyes out as the previously featureless blob gradually took the shape of a small, pitch-black rabbit, complete with a bunny tail and twitching nostrils. The newly-reshaped creature looked exactly like any small, black bunny, albeit with incredibly glossy fur and dull purple eyes. The newly born “rabbit” turned to the speechless man, hopping like any regular bunny, seemingly looking at the slack jawed scientist.
It took Robert nearly two whole minutes to come out of his amazement. When he did, he openly cursed himself for not setting up a camera. How stupid can I be? he lamented, tugging at his shaggy hair.
The knock on the door shook the man out of his misery. “Dad?” a young boy’s voice asked from outside the room, “Dad? I’m hungry. It’s already dinner time.”
Shit shit shit shit. “Erm… coming, Henry!” Robert yelled at the door. “Just, give me a moment, okay? Dad’s busy with something.”
“Okay,” Little Henry mumbled from the other side of the door, sounding defeated. 
“Please call your brother over, okay?”
“Okay.” Robert heard the pitter-patter of his youngest son walking away and sighed in relief. The man looked at the caged creature, wondering just what to do with it. After a minute or two of intense deliberation, he decided that he’d drive to his workplace after dinner, a research center some miles away, and get some more equipment, hopefully without arousing too much suspicion in the night crew. With some reluctance, Robert turned out the single fluorescent light of the room and left it to go to his sons, unaware that he had forgotten to lock it in his haste. 
*
Robert sat at the head of the small table, with 9-year-old Henry devouring his pasta enthusiastically to one side, and 13-year-old Jonah quietly fidgeting with his food on the other.
The younger boy had short brown hair, his pale round cheeks and soft tummy sporting some leftover baby fat, whilst his older brother was in the middle of puberty, growing taller and leaner every day, and developing an affinity for black hoodies that matched well with his sleeker black hair.
Robert’s appetite suffered from his excited nervousness, yet he forced himself to eat the bland pasta with store-bought Bolognese sauce.  
“What are you working on, Dad?” Henry chirped.
“You’ve been in that room of yours all day,” Jonah added.
“Just… something for work,” Robert mumbled. Both sons immediately knew there was more than their father was letting on.
Robert managed to eat little more than half his pasta, before his lack of appetite made it impossible to take another bite. He stood up hastily and said, “Boys, I have to go to work really quick, okay? I’ll try not to take long.”
Both brothers answered with a surprised and confused, “Okay?”
“Jonah, look after your little brother, okay?”
“Okay,” sighed the teen.
“Good boy.” Robert ruffled Jonah’s sleek hair, and despite himself, the quiet teen smiled a little. The man then went to the kitchen, grabbed his car keys and coat, and stepped out the door. “See you later boys!” He waved at his kids and left the house before any of the two boys could return the hand wave.
Jonah and Henry looked quizzically at each other, silent. Then they both returned to finishing their food.
After finishing his meal, Henry asked, “Don’t you feel like Dad’s acting all weird, Jon?” 
“Eh.” Jonah shrugged. 
“You think he’s hiding something in that secret room of his?”
“I dunno.” The teen leaned back on his chair. “And I don’t care.”
“You don’t?”
“It’s not our business, Henry.” Jonah stood up. “Anyways. I’m going to bed. See you soon.”
The younger boy huffed. “You’re just going to play videogames!”
“Damn right.” Jonah smiled back, looking just a bit mischievous, and Henry returned the smile. “Don’t take too long, okay?”
“’Kay.” Henry said, and Jonah left to their shared room. 
Henry waited until he heard videogame music and sound effects coming from their room, then he stood up. Filled with boyish curiosity and mischief, he walked to his father’s secret room, little heart pounding against his chest. Let’s see what you’re hiding, dad.
The boy reached for the doorknob, fully expecting to find the door locked as usual. However, it turned at the touch of his fingers. Surprised, Henry turned around to see if his brother was there—coast clear!—opened the door. 
With the light coming from the hallway streaming into the otherwise-dark room, Henry could barely make out the cage at the far end of the room and see something dark inside. Excited, he looked for the light switch and flicked it on.
He gasped when he saw what looked like a glossy black bunny inside the cage. Then his young face smiled in awe at the adorable creature. “Awww… what’s your name, little bunny?” Unaware of the creature’s nature, Henry went to the cage to look at the cute rabbit. Besides its pitch-black fur and strange purple eyes, which he quickly dismissed in childish innocence, he saw nothing strange. 
“Why’s Dad keeping you in here, huh?” Henry looked at the cage’s simple locking mechanism, and immediately a little mischievous idea came up to his mind. After turning around one more time to make sure no one was watching, he quickly, albeit clumsily, opened both the inner and outer doors. “Come on out, little bunny!” he said excitedly. 
The creature needed a moment to realize it was free. Then, it gingerly hopped out of its enclosure and unto Robert’s worktable, where Henry’s little hands waited to pick it up. 
“Here, bunny bunny,” Henry called out innocently.
But instead of hopping unto the boy’s hands, the rabbit jumped down on the floor and went close to his feet. Henry cocked his head in curiosity and the black rabbit looked up with its strange purple eyes. Then, it pressed itself against Henry’s feet, and melted into a small puddle of thick black goo in front of the startled boy. Before Henry could utter a sound, the black substance had covered his shoes, and had sprouted little tentacles that wrapped around the child’s feet. Recovering from the shock, he tried desperately to step away from the puddle, but found himself stuck against the floor by those tentacles. Meanwhile, the dark substance started creeping up his shoes, soon covering them almost completely in a black, glossy layer.
“Jon!” Henry shouted desperately, still trying to pull himself free. “Jon! Help me! Something’s wrong! There’s something—AH!”
The child yelped as a sticky tendril from the black mass started snaking up his leg. To his amazement, the mass on his shoes started constricting, dissolving the material of his sneakers and sticking to his bare feet; the outline of each toe visible behind the black encasing. 
The tendril touching his skin felt oddly cool, and the skin it touched, alongside the skin of his exposed feet, started tingling as if being caressed by a dozen tiny fingers. The strange sensations intensified Henry’s fear and he cried out once more for his brother. “Jon! Please, help me! Jon!” His young eyes filled with tears as more tendrils started advancing from his feet along his legs. Every single piece of clothing that came in contact with the goo was instantly digested and turned into more goo, quickly adding to the black, glossy mass that by now had enveloped the child’s body up to his knees. 
The 10-year-old nearly broke down in tears when he saw the goo growing with each piece of clothing consumed, adhering tightly to his body like a second skin. Then, he got an idea. If the thing grew by eating his clothes, maybe he could stop it by getting rid of them? 
Immediately, Henry started fumbling with his pants, pulling them down to no avail; they were stuck in the goo and couldn’t take them off without moving his feet. He tried harder and harder to pull his feet free, crying in desperation. There were some scissors right there on his dad’s desk! If he could just reach out to them…
An intense tingling coming from his feet gave him pause. To his amazement and fear, they started changing into something different. That odd tingling grew as they stretched out, becoming bigger, longer, his toes fusing together into three. 
This can’t be happening! His changing feet distracted the boy, then he remembered what he was trying to do. Swallowing his shame, he quickly started pulling down his tighty-whities, exposing his smooth round buttocks and small boyhood to the night air. He hoped he could somehow rip them off his body alongside his pants, but it was too late. The goo had already swallowed his pants, growing bigger than ever, and quickly made its way up his young thighs, covering them with a skin-tight, glossy black layer of itself as a single tendril grabbed the child’s underwear and fed it to the growing black mass.
Whimpering, Henry saw how sinuous little tendrils snaked up his thighs towards his crotch. Soon they crawled up his soft butt, almost squeezing it with their tight grip, filling him more and more with that odd, buzzing tingling. The sensations grew more intense when another tendril reached the underside of his small, tight ballsack, and started to envelop the wrinkly skin in black goo that quickly spready over his taint.  
“Please… stop…” The boy begged softly, seeing how the goo covered his balls and started growing unto his flaccid small cock. At the same time, the black substance finished covering his ass, spreading along his virgin pucker. Henry nearly broke in tears, when something strange happened: that warm tingling spread unto his little member and his butt, filling him with weird sensations as his boyhood was completely covered in black goo. He felt hundreds of tiny fingers caressing the sensitive, innocent skin, making him feel… nice…
“What’s… happening?” Henry mumbled, confused, as his breathing got heavier. His little member responded to the stimulation by growing hard, all two and a half inches of it. Similar sensations were happening around his butt. It took Henry a moment to realize that the goo was entering him, as a smooth tendril slowly forced its way into his hole, spreading those forbidden sensations all around. 
“NNhh… n-no…” The boy tried to squeeze around the thing, but it only made it worse. “S-stop…” All the while, the goo grew along his back, over his hips, about to reach his belly button, eating up his shirt and exposing his small frame. 
As it took over the boy, the gooey creature started to stimulate the nerves on his skin, trying to subdue his consciousness as part of its strategy to take over a host. It found a high concentration of nerves in the boy’s small member, and thus focused its efforts there, triggering a sudden burst of pleasure that made Henry moan as his knees gave out. He fell on his hands and knees, but realized that his hands had landed into the original puddle of goo. Just like his feet, they were quickly wrapped up in black tendrils, trapping the child in his current position: on all fours. Flustered, confused, cheeks red, and body awash with new sensations, Henry could only breathe heavily as the goo covered his hands and started travelling up his wrists. His position changed slightly when his feet finished growing, pushing his new, glossy black butt slightly higher in the air. The boy managed to look back, amazed at the changes. His feet were sprouting tiny black claws. They look like bunny feet. At the same time, something round and soft started pushing out of his back, right above his ass. 
But Henry was too distracted by the sensations coming from his small, hard dick. Sensations that grew stronger and stronger as the goo solidified and melted with its skin. Panting, the boy couldn’t imagine anything weirder, until two purple eyes looked back at him from the black puddle on the floor. Henry wanted to scream, but instead released a low, soft moan. 
“Human… child…” an ethereal voice whispered. Henry didn’t know where it came from. Was it even real? Was it in his head?
The boy looked back at those glowing eyes, and managed to mumble weakly: “What are you… doing to me?”
“Be… host…” The thing replied, “Good host… Surrender…”
“N-no!” Despite the pleasurable touches of his body, Henry shook his head.
The black puddle shifted. “Look. Here.”
When the boy looked back into the creature’s eyes, they started glowing brighter, their purple color shifting and swirling with shades of white and pink and alien colors that Henry wouldn’t know how to describe. 
The purple glow reflected off the boy’s face as he found himself unable to look away from the mesmerizing display. “Wh-What…”
“Look. Here.” Those glowing eyes grew bigger, taking up a larger space on the floor, their glow intensifying as well. “Just. Look.”
Henry found it difficult to do anything else, even as the goo spreading up his arms closed in on his elbows, and the one growing up its body crept up over his belly button, towards his midsection. The weird, abstract shapes spinning and swirling in shades of purple were so nice to look at, that soon it was difficult to think of anything else. 
“Uhh…” The child mumbled, mouth falling open, the purple glow reflecting off his eyes. 
“Good host. Feel good.” As it said this, the goo over Henry’s hard little cock seemed to massage to skin, gently kneading and caressing its sensitive nerves, making the boy huff out in pleasure. “See? Feel good.”
“Ahh… Mmm… Feel… good…” Henry’s words broke into needy little pants, his eyes growing hazy and dreamy, a fat drop of drool rolling from the corner of his mouth. 
“Surrender. Feel. Better.” The eyes came closer to the boy, rising from the floor on top of a black gooey pillar towards his dazed face. “Surrender. Be. Mine.”
Henry was too busy moaning softly to reply. His little cock had never felt so sublime, and those sleek tendrils corrupting his ass made him feel things he did not even know were possible. Soon, the glowing eyes of the black mass stood right in front of him, while he looked back, absolutely hypnotized by their glow and the pleasure of his young body. Said pleasure forced him to curl the large toes of his new bunny feet and distracted him from the short, spade-shaped gooey tail that was growing above his round butt. 
“Ahhh… Mmm…” With his last bit of strength, the boy tried to look away, to put up a last bit of resistance. But it was too late.
The purple eyes closed momentarily when a large blob of goo containing them sputtered unto Henry’s face, covering it in black sticky substance. The outline of his opened mouth and nose and ears could be seen pressing against the goo as it tightened unto his skin, encasing him in glossy black. For a while, only darkness existed for the boy, then the purple eyes of the creature opened unto his own like a pair of glasses through which he would see everything from now on. His new eyes. 
“Good. Host.” When Henry opened his eyes again, he was met with a swirling pool of purple that took in his whole vision. “Surrender… Surrender…” The boy released a few muffled cries that turned into low moans. No resistance remained from poor Henry. Only pleasurable obedience. 
“Feels… good…” The boy gurgled out between moans, viscous black drops oozing from his parted lips as he stared mindlessly into the creature’s eyes.
“Gooooood.” With Henry’s remaining will gone, the creature started the final steps of the child’s corruption. The goo on Henry’s arms finished coating his skin up to his shoulders, whilst the goo around his tummy stretched up and around his nipples and slender sides. The little growth above his butt finished growing into a glossy bunny tail that twitched with excitement as black tentacles spread forbidden pleasure inside the boy’s gaping asshole.
Henry’s world became a haze of purple shapes. Little by little though, as the goo finished enveloping around his head, covering his hair and ears, he started to feel… something. New, weird impulses and needs imprinted into his young mind. 
Spread.
His whole body tingled as his brain was slowly corrupted by the creature. It penetrated the boy’s most private emotions and memories and twisted them to suit its own needs. When it realized that Henry had a family, the creature ordered once more:
Spread!
“Spread…” Henry moaned out, his little cock twitching eagerly at the thought. Having pulverized his resistance, the creature released its grips on the boy’s hands. He went up on his knees and wrapped a gooey, sticky hand around his glossy black boycock, touching it innocently and confused by the waves of pleasure it produced. 
Surrender
“Surrender…” Henry—or what was left of him—started to stroke his hard cock, producing wet sticky sounds alongside gentle moans. The goo around his ears started to change further, infesting the small lobes. They started growing pointier, longer, moving up over his smooth head. At the same time, the purple eyes swallowing his vision grew once more, stretching and fusing over his dazed eyes into a visor-like shape. The goo over his mouth started to pull close, forcing the boy to close his mouth as it was covered in a smooth black mass which quickly stretched out into a short, blunt muzzle. The new host’s nose was swallowed up in the changes; it was melted and reshaped into a black, twitching bunny snout. 
The brain of the host who used to be Henry received a wave of new stimulation in the shape of new, delicate and enticing smells, followed by the strange pleasure of surrendering entirely to the will of the creature. Soon, the last patches of naked skin along his chest and shoulders and neck were covered by smooth black goo. Those pointed ears grew longer and longer, turning into glossy-black bunny ears.
“Good… host…” The final bits of goo on the floor fused with the new creature kneeling on the floor: a gooey, moaning, small black bunny boy with a purple hypnotic visor forever in place over its dazed eyes. The host’s sweet moaning rose in volume as the stimulation on its cock grew and grew, reaching a sweet crescendo that ended in a climax of pleasure that swallowed up its mind. The body that used to belong to Henry twitched and shook as its boycock erupted with spurt after spurt of jet-black goo that spluttered all over the floor of the room, its cries of pleasure silenced by the goo over its muzzle. 
After the new creature’s orgasm wound down, it recovered its shaky breath, and stood up on wobbly knees, its cock still hard and eager. It looked at its new rabbit paws for hands and touched its long ears and tail. It flexed its large powerful feet, and puppeteered its host’s body back into the hall, using its memories for guidance. 
Time to find that older brother of his and share its gift with him.