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Sadie and Serena's Fall - Part 04

Aug 03, 2021

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The following is a 300+ pages illustrated story. all characters are over the age of 18, and the story surrounds two step-sisters that are not of actual blood connection. The story contains several dark parts and has different horror and violent aspects to it. None of which is for the purpose of cheap snuff, but rather, to depict the cruelty and merciless nature of the underground world of debauchery. The world is a fictional one, and it does not share our world's history or development.


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Sadie and Serena shared in the afterglow of the sex. They had connected in a way far deeper and more sensual than ever before possible.

"Are you okay, dear step-sister?" Serena asked.

"Yes. More than ever, my sweet sis. We're not... Directly related... So this isn't weird." She giggled. They both spoke with such audible emotion. Like their souls were laid bare.

"What are these lights? I can take you in to do a quick check at the..." Serena was interrupted. Sadie shushed her. Sadie knew that Serena, as a nurse, would not rest before understanding what had happened to her. 

She didn't want to concern her with anything just yet. Sadie felt so at peace, so calm. She just wanted to enjoy this moment. Scribe it into her heart. Memorize every bit of it.

Serena lifted Sadie's head closer. Their mouths were inches apart from one another. 

"I'm so glad you're back. I was so lost without you." 


Sadie looked comfortingly into her step-sister's eyes.

"je t'aime"


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They had made it back to Serena's place. Neither really possessed the ability to recall their trip back home. Serena was done showering as Sadie took her turn. They hadn't really exchanged any words since the van. There wasn't really an awkward tension between the two, only unexplored topics that needed to be addressed. 

Serena sighed and zoned a little out.

Why... Why am I not in more of a turmoil... Why am I feeling so content? Sadie needs help, her body is completely twisted and distorted. It's like she doesn't even see it, but yet... She seems to enjoy herself. And... 

Serena stopped in her trail of thoughts as she was encroaching on dangerous territory. She pushed the topic away. there was something that she felt during their moments of intimacy. She was confused, but even more afraid. Scared of what would happen if she allowed herself to stick another finger into the dark sexual water that her step-sister was swimming in. Her body suddenly felt warmer. A strange sensation ran through her. Her more intimate areas were swelling. Her breasts were a lot firmer than normal. It even felt like they were growing. 


What had Sadie done to her?


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It was subtle.

But the change was noticeable. 

So firm...


Serena was a little confused, but she wasn't complaining. Maybe she just hadn't noticed before. Her boobs felt so strange. They were reaching for the sky on their own. 

"Oh..." She startled herself as she touched her lower regions. Her touch, her own touch, rewarded her with such a jolt of pleasure. 

She rubbed slowly. Before she could stop herself, she was chasing a high for the third time. 15 minutes had run by so fast, she didn't notice the sounds from the shower had stopped.


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A loving grip tightened around Serena's throat. She felt sedated by the sensation. She let Sadie do whatever she wanted to her. 

"Open your mouth." Sadie said, and she complied. As she did, Sadie turned her head and went in for a deep and passionate kiss. An orgasmic burning sensation erupted as she pushed her tongue into Serena's mouth.

At this point, it just felt right. They were locked in a steaming embrace for a long time. Sadie didn't relent, as she was purely driven by a passion and desire to share in the pleasure with her step-sister.


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Serena was warming up to this more and more. As the two shared in this moment, Sadie noticed that her step-sister was sucking on her tongue, massaging it expertly.

She could feel her own heart beat in her chest, the throbs quaked through her body, saturating it further with ecstasy.

They made eye contact. Staring into each other's eyes, seeing the soul of their own kin stare back at them. They were both the masters of their own actions, and they were both acting on their own accord. They locked eyes as they exchanged fluids. 

After half an hour, they finally completed the kiss. A strand of drool connected the two as they pulled their heads back. The bridge of drool broke and it splattered on the ground.

"Good morning Sadie." Serena said lovingly. Her step-sister chuckled and greeted her back.


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"... And how large will they grow?" She asked as she sampled her step-sister's massive breasts.

"Heh. I don't actually know. They might still be growing, I'm not sure. they seem to change rather sporadically, it's like they enlarge during intense situations rather than just over time. "

"That doesn't... I... Why are they so light? They feel like light clay that I can shape by merely pressing on them. They're like that pillow you had when you were younger. The one that adapts its shape based on your head." Serena was so fascinated. She kept squeezing and lifting them.

"I d... aaah...." Sadie let out a moan as her step-sister put more pressure onto her boobs. 

Serena couldn't help herself. Her step-sister's body was so enticing, she couldn't stop touching and prodding.

"I have to ask again. You don't know what your mouth glowing is all about, but... Why are your breasts adorned with those strange glowing patterns? Those look like QR codes. Have you tried scanning them?" She asked as she kept exploring the body.

"Mh. Maybe you should scan me. Maybe... aah.. Serena, I'm so warm. It's like I'm burning up. It's not a painful burn, but... It's ramping up. How about, if you let me act on this heat, you can do whatever experiments you want on my body. I can be your science project. You get to.. Mhh... I'll be your guinea pig." Sadie was relishing the concept of her step-sister treating her like a science experiment.

Touching her body, Serena felt a tingling sensation grow. 

"Deal. But, why does your collar say that you're a pig whore?" The question was blurted out. It was something she hadn't really thought that much about. It was clear that her step-sister was into some kinky bondage stuff, but she just had to know why she would degrade herself in such a matter. 

It shattered the image she held in her heart of her step-sister.


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Sadie was an impatient creature. She pushed her step-sister down as she dug in.

"No, don..." Serena protested haphazardly, but let herself be overpowered by the lusty step-sister. 

Sadie's mere presence was arousing. Touching her was exhilarating, kissing her was intoxicating, fucking her was liberating.

After all the men, after all the callousness, after all the loveless intimacy... Sadie used every trick that she had learned to pleasure her step-sister, to push her away from morality, away from rationality, away from rejection. Pulling her deep into the dark where they both could act on nothing but carnal instincts.

Sadie loved her step-sister, she found her beautiful and adored her strength and willpower. This felt more like bolstering their relationship as close step-sisters than anything else. In the eyes of others, this might seem like two step-sisters courting, but it wasn't that. It was just one step-sister wanting to share a world with her beloved step-sibling.

"ah.. Sadie, I f... Ah.. I feel it, the sensation.. The heat!" Serena uttered in between moans.


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Her body felt scorching hot. Splayed out, she was at the mercy of her step-sister's relentless assault on her pussy. She was in too much bliss to notice how much her body had begun to change. At an alarming rate, several of her areas had already begun to remodel themselves. It seemed that her step-sister's explanation was quite accurate. The intensity of the situation did indeed have a lot to say about how fast the transformation worked its way through the body. 

Her lower abdomen along with both her breasts had begun to take on a new light.


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"Ahh, It's.. I can't! Ah!!" Serena moaned as her body shuddered. She came, hard. too hard. It felt like dark cracks were scratching themselves into her view, even with closed eyes, the blackness etched itself onto her mind. They screeched and prickled. Fluids slipped out of her as her step-sister accepted it into her mouth greedily. The orgasm subsided, but her body was still shaking. The ecstasy of the pleasure wasn't done with her yet. More. Again and again, waves of crushing pleasure landed devastating blows to her mind.

Squeezing her own throat, she let her body do whatever it wanted. Riding the high, she let it dominate her. 

But it wasn't done, as it eased down, she wanted more. It was like a carrot on a stick. And she wanted to chase it further.


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4 hours had gone by.

"Do your job, pig!" Serena had mounted her step-sister and pulled her legs up behind her. It wasn't clear whether it was the submissive personality of Sadie that had shone through, or if it was Serena who had a dominant nature, but for whatever reason, they were extremely compatible. A give and take relation that was perpetually rejuvenating them both with sexual energy.

Serena had picked up on some of the changes to her body. For some reason, she was happy. Her boobs felt so tight and firm, they had grown in a strange way, but she loved it. Two gravity-defying mounds of luminescent flesh that demanded both attention and reverence. Her skin was gleaming with unnatural perfection. A coat of oil-like substance had turned it into the perfect skin.


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What followed after the 4+ hours of intense sex was Serena tending to Sadie. It was something precious in those innocuous eyes. Her step-sister seemed almost like a child. Unsure, nervous, weak, and afraid. 

"I didn't mean to call you.... Whatever I called you. It was just. The heat of the moment." She said comfortingly as she crawled closer. 

Sadie opened her mouth, not to respond, but her lips latched on to Serena's finger. taking a few pauses to breath, she kept suckling at her finger. 

Sadie seemed drained from the sex. But, even more than that, she seemed drained of mental capacity. Serena didn't find it that odd, seeing how insane their session had been. 

As Sadie's leg tried to make contact with her thigh, she curled her leg and held onto it. It seemed to calm Sadie a little.

"I'm not going anywhere. I will be here, for you, for as long as you need. Must've been scary to be in your world without anyone to hold on to. I can be your anchor. And... I have to come clean."

Serena briefly paused as she took one last read of her step-sister's face.

"I knew you were into some really crazy stuff. Actually, I didn't think it was a fetish or kink, I thought you had been kidnapped and raped. Eh... This was kind of why I spent so much time and resources trying to find you. I may have come off as composed, but the last... I don't even know how many days... I have been desperately trying to find you. Someone sent me a link to a livestream. I saw you, on an operating table. A lot of different angles. Your breasts were glowing pink, your private parts were being injected with a syringe... And you had those horrible... horrible  marks. Like you had been tortured. I freaked out and closed the link... I called the PI that I hired to find you. He was so close to tracking you, to finding you. I was actually about to meet with him today. But I can call him off now. You are safe with me, and... It's fine that you enjoy this freaky world. But you should have told me, you should have called me. It hurts me that you didn't tell me earlier. "

Serena took a few deep breaths. So much that was on her chest had finally been lifted. She gave her step-sister a loving smile. She wasn't even sure if Sadie was awake. It wasn't some


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Another hour had gone by. Sadie's expression had slowly changed over that time. Her eyes had more shine to them. 

"Hold my hand." Sadie was in heaven. Her step-sister smiled at the question. The first thing Sadie had said was something so adorable, Serena took her hand and held tight.

"You called me a pig. Am I really a pig in your eyes?" Her question should've frozen Serena, but for some reason, it felt endearing.

"You're a cute pig, Sadie." She wanted to say something else, but calling her a pig just felt right.

Sadie nodded, seemingly content with the answer. 

"When did you...Put on that lipstick? I don't own anything like that, and you didn't bring any." Serena was curious. She thought her lips had a different hue of red earlier.

"The glowing metallic thingie on my chest does something. Or, was it something else. My lips change color and shine by themselves."

"Heh, where did you buy that chest accessory then?" 

"It was something they operated into my flesh without me knowing. Along with the nose plugs. And also, this collar doesn't have a simple way to be opened. I'm not even sure it's possible to take it off. At least not without some sharper equipment. But..." She noticed her step-sister's expression, "It's fine. I actually like it. It makes me feel... Different." Sadie's tone was so disarming. She wasn't even the slightest bit worried about her current predicament.

"As long as you're happy, I'm happy." Serena said.

"I love you." Sadie told her step-sister in a loving tone. Both of them drifted off into sleep, still embracing each other. Sadie's body felt so soft and squishy. It was like a strange slippery pillow that pressed itself against her warm body.


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The morning hours went by. Serena was putting on her light jogging outfit. She used this when running in the woods. But, that was mainly in her head. This was just a daring outfit she bought and never really felt brave enough to use. It was basically underwear, but underwear that was technically allowed to run around with.


Her body felt lighter, like she had balloons of helium attached to her back.


Sadie was there. She crawled over to her step-sister and looked at the portrait that stood atop Serena's nightstand. It was a photo of Sadie. 


Serena gave Sadie a loving pat on the head before she headed out.


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The sun was a scorcher, but it felt somewhat faint on Serena's skin. she was running, but not on the forest path. The scenery felt foreign, but familiar. She was running through the neighborhoods along the outskirts of the city.


The choice of running through a more crowded area was definitely a conscious choice. It was supposed to be a warm-up run, but she couldn't help but push herself hard. She had so much pent-up energy that needed to be released. She did interval sprints for 30 minutes. When she ran over the small bridge leading to the playgrounds and sports fields, she had drenched parts of her top.


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The top felt smaller. The shorts were digging into her. At this point, wearing lingerie would grant her better cover.


She heard the faint sounds of people that were playing far away. She actually felt a little disappointed that they were most likely not in line of sight to her. Her brave new morning run was maybe the first step to a new hobby? Unfortunately, this would not play out how she was dreaming it would.

Reaching for the skies, she put her body on display, even if no one saw her, it still felt amazing. The fabric that constricted her boobs were being pushed to their limits.


She began doing stretches. A dangerous man was watching from afar. Or was he close... Time and distance were less relevant.


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He was staring at her. No subtlety or discretion. There was a rage building within him. It was a necessity. His mission was approaching. The rage was needed to do the job.

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As he approached, Serena kept doing stretches. For some reason, she was either completely oblivious to her surroundings, or hoping someone would catch a glimpse.

Bending forward, the shorts' thin cover under her crotch was not enough to spread across the width of her nether parts. Her slightly engorged labia majora framing the tiny strip of clothing.


It was something Serena had always secretly wanted. A strong physique with round, large, and perfectly perky boobs, as well as a pair of thick, muscly, and springy ass cheeks. As she was too busy with work and keeping up with appearance in her time off, there wasn't enough time for her to actually sculpt the body of her dreams. 


It was but a dream.


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"I got your smell, girl. I will come for you." A weird whisper echoed in the open air. The dark sunlight hid his presence. 

He was locked on.

The reverberation of his words lingered in her soul. She was unaware as his words played over and over in her head. She sunk deeper into her pose as she kept stretching. Like with a good audiobook, she blocked out most sounds so she could focus on his words. 


The dangerous voice, the dark presence. It was fleeting, at best. Coming and going. An erratic reality, lacking all consistency and flow.


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"Stand up and lean back into me... Do it, you whore!" His words spurred Serena on. She wiped sweat from her brow as she leaned into the reach of the evil man. 

Her heart was beating fast and loud. 


To be far away from home, dressed like an easy victim, and then lean into the embrace of a horrible fate. Surely to be taken away, and experience what her step-sister did.


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"You feel right in my hands, Sadie. You're a good squeeze. Remember this sensation, for it is awaiting." The evil man told Serena. But before she could even react, or register that the man called her Sadie, she was gone. 

The chloroform was seeping into Serena's nose and mouth. Everything was spinning. He was grabbing and sampling. She didn't really look the way that she was described, but that's the thing about these experimental alchemical products of Telmiak. The girls that are affected by it change a lot. Physical descriptions of the targets are always off. But this was still a lot. As she went limp in his arms he sighed. A small part of him wished he could enjoy this more. He was always told to take more advantage of the situation. To grab more, take more, do more. It didn't help. There wasn't much passion put into this. But he was beginning to get kicks out of dominating weaker females. 


He just wished this was real. But as an appetizer, it wasn't really that bad.


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Serena woke up.

She'd enjoyed a few vivid dreams before, but this felt new. She was sweating and full of adrenaline.


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Trying to regain her footing, Serena went to answer the door. She was fairly certain that was what had jolted her awake from the nightmare.

The flashes of her nightmare were still playing in her mind. They were so fresh, she just wanted them to go away. Fade into the past and be forgotten. 


She was so preoccupied with trying to push the memories of her dream away that she never stopped to consider the fact that someone was at their door in the middle of the night.


It was unfortunate for her, but the fact of the matter was that she had been drugged, and it had actually affected her. A small suggestion was clouding her mind. She was going to open the door without first asking who it was, before consulting anyone else, before taking any precautions, and she was not to be alarmed, nervous, hesitant, or give herself time to get fully clothed. Her strong will had managed to let her put on some underwear, but that was the extent of how her system fought the strange influence guiding her down the corridor.


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An eerily familiar face awaited.

The moment she unlocked the door, the man from her nightmare walked in. He looked wrong. Like he literally was a manifestation of her nightmare taken physical form. His face was misshapen and his eyes reflected the darkness that most likely was his intention.

Serena stumbled backwards, nearly paralyzed, she couldn't run away.


"'Hi there, whore. Remember me? " He said as he lifted his weapon.


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A sting in the neck. The next moment, Serena was on the floor. 

"Shhh... Just let it happen, lil' squeeze. It's fine. When you wake up, things will be better. All your aches and confusions will be replaced by purpose and bliss." The man said. 

It felt kind of wrong to him. Not the act of destroying the lives of innocent women, but the job. His mark didn't match the description. Something was up. 

"Analyze this one, I'm going to see if there's someone else at home. Give me the warrants. If there's a man in the house, we need to respect the doctrine." His assistant shuffled through his bag before handing the man some documents. 

Serena tried to speak up, but she was paralyzed. She felt a warm blanket of darkness wrap around her, but she wanted to warn Sadie. She wanted to stop the man from going upstairs. She couldn't let Sadie go through this again.


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"Ah.. this must be you, sneaky little bitch." He found Sadie.

Unaware, Sadie was having the best sleep she's ever had. Finally safe, finally with her step-sister. Able to share such an important part of her life and soul with Serena was the best thing that had ever happened to her.

The future she was so excited about was about to be stripped away from her, once again. But this time, her step-sister had suffered because of her as well.

Squeezing the trigger slowly, the man smirked. This was what he loved about this job. Destruction of the flesh was nothing compared to that of the mind. Knowing what hell awaited this cute little bitch, he took his time to enjoy the moment and bask in it. 


"You will scream and cry, beg and plead. Crushed and broken, your personality will be scraped out from that young skull of yours. Men will laugh as you cry in pain. I wish I could see you die as a person and be left, an empty shell of your former self. A mind-broken sex slave." He cooed. Like he was humming her a bedtime story. He ended the little monologue with a squeeze on the trigger. A dart shot out and embedded itself in Sadie's butt. She didn't even wake up.


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The low hum from the machine is all that's audible. A very silent, very cold, and very isolated Serena is lying on a strange bed made of soft metal. 

If it was Sadie they were after, then how come she was finding herself in this unfortunate situation?

Only a few days had gone by since she was tranquilized, but so much had already happened to her.

Several looks and moods had been tried out, deep, extensive, and invasive delves into her psyche had been conducted.


She was the test subject for the newest strain of a dehumanizing agent. Like her step-sister had been before her, she was to be a live test subject for new directions that this technology could be developed. 


Right now, she was finishing up the augmentation to her sense of touch. 

For the first round of adjustments, it would be her groin and breasts that would have the sensation of touch, and the pleasure it would induce, amplified tenfold.

Thanks to the new acquisition of the arms and technology department that used to belong to the manor of law, robotics and cybernetics of higher grades were available. Serena had been outfitted with a thematic peripheral device. It was mechanical, but should function and feel like it is part of her. 


Most of this was based less in alchemy, and more in the scientific field of robotics and cybernetics.


With all these modifications, she was not yet done. 


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With the serum already coursing through her veins, the addition of shortening her intestines would serve as a good motivator. The constant hunger for substance is a strong tool in breaking new subjects. Giving in to cravings is a quick way to remove inhibitions.


Fusing the skin with an elastic material has opened the doors to new fields of development. Some of these fields would be injected into Serena's body.


As her bonding agent needed a lot of power to activate and fully diffuse with her skin, it was one of the final touches to her transformation. She still had a few more additions and changes in line before the activation was to take place.


The cameras zoomed in, focusing on every inch of her exposed body. Making the surgeries and transformation process a good show was also important, to keep the investors and people in power happy. Plenty of cameras and sensors were part of these procedures, as well as keeping the room well lit, even when no one was there.


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Reacting to her subconsciousness. Her urges and cravings. Her mood and arousal. The artificial nerves were all completely connected to her. It was a part of her now. 


A camera zoomed in on her sore and plump ass. An image was sent to her brain, triggering a reaction. Her tail lifted itself up as her lower lips began dripping in anticipation. It was all working flawlessly together. She wouldn't need to be taught to use her additions as they made changes to her instincts. Using the tail would not be a thing she would be able to master, as it simply obeyed her feelings, not her wishes.


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The finishing touches were being applied. 

A long list of tasks had all been completed. 

The bonding agent had been successfully activated, as the experimental compound had completely altered her skin, mixing in with her dermal layers, completely, and permanently, altering her appearance.


A voice echoed out, someone was approaching.


"Yes, she's about ready for a demonstration. The previous 'plastiskin' applications you've heard about are old news. I will explain during my presentation." He was talking to someone on the phone.

"There will be no repercussions. It was all ironed out. Even the most zealous remnants of the TCTF would be unable to touch us. She w... o..." He was interrupted.


His cold gaze scanned the unconscious girl. with a callous tone he continued the conversation. 

"... No, I can't. Look, you know how it is. Even if you were to donate a handsome amount, you still can't come and fuck this one, it would contaminate the final stage of the binding process. O... Hmm? " he stopped and listened to the other side.

"Ah, well. All you're doing is aiding in funding important research. The doctrine must be followed. Yes. We will continue this after the demonstration. But just to give you an idea, this one has yet to be conditioned and trained. That's right. The drugs should help. She's as wild as she appears, although she's got no claws." He chuckled to himself. 

His laughter was dry and forced.


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