Chapter Text
5 July 19:34:22
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Preliminary testing on this new batch of serum has proven effective! I’ve injected a live Deathstalker, but I’m currently unable to observe its effects personally. It seems that four female students from Beacon Academy have infiltrated my island and are making a nuisance of themselves, as Vale teenagers are wont to do. They’ve removed my jammers, so they’re able to communicate with Beacon, and Ozpin especially. Oh, Oz, old chum…
Bah. They have yet to locate my laboratory, but I suspect it won’t be long. With luck, this serum will be quick in its work…
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A foul scent filled the air, prompting three of the four huntresses-in-training to cover their noses as they made their way through a small crevasse. Ruby even looked sick to her stomach. Yang had pulled her orange scarf over her nose, but even that didn’t seem to block it entirely, and Weiss was pinching her nose and breathing through her mouth. Only Blake seemed to be unaffected and cast an occasional curious look to her friends.
“You seriously don’t smell that, Blake?” Yang asked, incredulous the third look. There was no real reason to be quiet; there were only five people on this island, she knew—Team RWBY and the mad scientist Dr. Merlot—and the Grimm and androids would find them whether they were silent or not. More than likely it had to do with their scrolls; Merlot had been able to talk to them through the devices and listen in on their communications with Ozpin.
“I smell something, but it doesn’t smell that bad to me,” Blake replied, her ears swiveling under her bow to catch any other sound. “I’m… not sure what it is, though.”
“Let’s not find out, shall we?” Weiss snapped. “Let’s just keep moving so we can find this stupid laboratory and get out of here.”
“We ought be getting close, too,” Ruby said, a tone of hope in her voice. “There’s more and more Grimm coming after us now, and even more androids!”
“Ugh, don’t remind me.” Weiss shook her head. “Every time we have to fight, I have to smell that hideous stench. No one ever mentions that smell can be a weakness!”
“We can get through it, Weiss! We’ll find that lab and Professor Ozpin is with us! Sort of.” Ruby waved her scroll in her hand briefly before slipping it back into her pocket. Weiss just rolled her eyes at her team leader and picked up her pace, forcing the other girls to do the same to keep up.
It had been close to sunset when Team RWBY arrived on Merlot’s island, accidental stowaways on one of his cargo ships that had been loading in one of the docks at the edge of Forever Fall. At first, they had no contact with Beacon; Merlot had built signal jammers around the small island and they’d had to take them down before they were able to move on. That was how Merlot found them.
The mad old scientist from Mountain Glenn taunted them and Ozpin, and the Headmaster wanted more information on just what he was doing with the Grimm he was capturing and storing. Team RWBY already had a good idea with the mutant Creepers and Beowolves they’d faced in the forest, but Ozpin wanted to know more about how he was doing it. And so, as the sun slowly sank beneath the horizon, Team RWBY was slowly making their way inland.
Soon enough, Blake—with her night-vision—spotted a pipe that was set into the rock wall of the crevasse. Over the rock wall, they could see a fluorescent glow; that had to be the lab itself. The girls nodded to each other in silent agreement, and Blake took the lead to follow the pipe toward the lights. It slowly grew brighter and more pipes joined the first. Then, finally, after another several minutes of walking, it was bright enough for all four girls to see the large tank in front of them from which more pipes ran.
As the girls rounded the corner, they could see that they’d stumbled on some sort of refinery. Steam hissed from several pipes and pumps rumbled down below. But it wasn’t oil that was being carried. Large puddles of a strange, greenish goop bubbled on the ground beneath the pipes. Here was the source of the stench; all three human girls gagged, but Blake once more didn’t seem to notice it. In fact, she approached one of the pools of bubbling liquid and crouched to get a better look at it.
“Students, have you found something?” Ozpin’s voice sounded over their scrolls.
“We’re looking at some kind of refinery. There are pipes carrying a green liquid that just looks… toxic,” Blake replied. Despite her words, however, she leaned in closer, until her face was just inches above the pool.
“Smells toxic, too,” Weiss grumbled. “Blake, get away from that!”
Blake startled but pulled away, looking embarrassed. As she did, Ozpin spoke up. “I suspect Merlot is on this island for a reason. He’s harvesting this substance, and whatever he’s using it for can’t be good.”
“Let’s follow the pipes,” Blake suggested, trying to save face. There’d been something about the eerie green substance that had fascinated her. “No doubt they lead to the actual refinery.”
“Good idea, Blake!” Ruby agreed, hefting Crescent Rose. “Let’s go, team!”
Though the team followed, it didn’t take long for a swarm of Grimm to find them. Maybe Merlot had set them out to find the girls, or maybe they’d been attracted to the pool of ooze that lay under a line of pipes. Whatever the case, a full pack of Beowolves charged at them, led by a pair of Alphas. It wasn’t anything Team RWBY hadn’t dealt with before, though. As Ruby and Yang charged the Alphas, Weiss and Blake split the remaining pack between them. Both faced at least seven of the wolf-creatures, but neither found it particularly difficult—
—at least, not until Blake found herself with her back to the pool. She tried to skirt its edge, tried to loop around it and flank the Grimm that surrounded her. She’d even gotten as far as the deepest end of the puddle before a well-timed swipe from one of the Beowolves and a lucky one from a second sent her flying into the liquid. Her arms shot out to catch herself, but a third took the opportunity to pounce on her, its weight slamming into her back and driving her face-first into the puddle.
Blake was completely submerged for several moments. She fought to rise, fought to get out from under the Beowolf’s weight, but only succeeded in swallowing some of the gunk and breathing it in as her lungs fought for air. It burned everywhere—in her stomach, in her lungs and nose, in her eyes and on her skin. Not even her clothing seemed to be any shield from it.
Fortunately, her team came to her rescue. Yang killed her Alpha and blew the Beowolf on top of Blake into the wall behind it with a shot from Ember Celica. Weiss held off the remaining few, and soon enough the pack was gone. Ruby sliced off the head of the second Alpha and darted over to help pull Blake out of the ooze—or at least, she tried. The moment her hand closed around Blake’s arm, Ruby yelped and yanked her hand back like she’d been burnt. The way it felt for Blake, that might not have been that far off.
“Guys, I can’t touch that stuff!” the young team leader exclaimed. “It hurts.”
“Use Crescent Rose’s staff,” Yang suggested, though she’d been reaching for Blake as well.
“R-right.” Ruby shifted her grip on her scythe and extended the long shaft toward the faunus. Blake, however, waved it off, getting onto her hands and knees to crawl onto the grass that still managed to grow a few feet away. She coughed as she went, trying to expel the liquid from her lungs. When at last she was able to breathe, she rolled over onto her back.
“Are you okay?” Weiss’s voice came from above Blake’s head, and she managed to crack her eyes open.
“I’m… fine,” she wheezed out. The burning was starting to fade even though she was still doused in whatever the liquid was, and she was able to sit up without aid. Doubtless her aura had kicked in and was beginning to heal the damage. She felt the cool night breeze on her feline ears and realized, belatedly, that her ribbon had been lost, likely in the struggle. Frowning, her ears folded back. “We can’t stay here forever.”
“Can you walk? Does that stuff not hurt?” Ruby’s face was full of concern for her friend and teammate. Blake just shook her head.
“Not… really.” Blake slowly got to her feet. Her limbs still shook, but she kept her balance and her strength was returning quickly. The stuff seemed to be drying just as fast, too, fortunately for her. “Looks like I’ll be good to walk, too. We should keep moving; I get the feeling more Grimm will find us soon.”
“Right.” Ruby hefted Crescent Rose and started off again.
Soon enough, Team RWBY found the laboratory. The pipes disappeared into the side of a large building. It only looked to be a few stories high, but no doubt there were lower levels further underground, too. A massive door was built into the side of the building, likely to allow through large vehicles—though they saw no roads. Androids seemed to swarm outside of it, and as soon as RWBY crested the small rise, they took up arms against the huntresses-in-training.
Though it was a fierce battle, joined by Grimm along with the androids, the girls made quick work of them. When the battle was over, Blake found herself leaning against one of the pipes, panting heavily. It had been damaged in the fight, but still bore her weight well enough. A small trickle of the green ooze trickled down from a crack a little higher above her; after a brief glance to make sure her teammates weren’t watching—they were trying to find their way past the door—she dipped her finger into the liquid to coat her finger in the stuff and slipped it between her lips.
Now that she wasn’t drowning in it, Blake realized just how delicious it tasted. There was a bite to it, but it tasted almost… savory. Salty, too. She was almost reluctant to pull her finger from her mouth for another taste, but she did—only to put it back in and suckle the flavor off. For some reason, having something in her mouth felt… comfortable.
As she did, she slowly became aware of an entirely different kind of burning. A smoldering heat was building in her gut, slowly making its way down to her loins. Under her white top, she could feel her nipples hardening, scraping at the fabric. It felt almost as though she was going into heat, as every faunus did for two weeks with the change of each season—but the end of summer was still weeks away. It was too early.
Fortunately, Blake was well-practiced at ignoring her heat. She pulled her finger from her mouth and joined her teammates at the giant door. As she did, Merlot’s voice came onto their scrolls.
“Do you believe things happen for a reason, Oz?” he said. “I mean, your little prodigies practically washed ashore here on my island.”
“I’m not sure what you’re getting at,” Ozpin growled as RWBY exchanged looks.
“Maybe they can be of some use to me after all,” Merlot said slyly. “How serendipitous…”
“That’s not creepy at all,” Weiss muttered, but as she said that, the door ahead of them started to open. She exchanged another look with her teammates, but they weren’t going to pass up the opportunity. As one, they hurried inside, pausing only for a moment to let their eyes adjust from the darkness of the early night to the bright fluorescent light in the lab.
“Greetings,” came the madman’s voice over the P.A. system above, his face leering down at them from screens placed in various positions around the room, “and welcome to Merlot Industries, where we’re building a better tomorrow, today!” His face disappeared from the screens, replaced by the Merlot Industries logo, but they knew better than to assume he wasn’t still watching.
“Don’t get distracted,” Blake warned, as much for herself as for her teammates. “Let’s keep moving and find out what he’s doing with that substance.”
“Right,” chorused the other three, and they started toward a much smaller door that had opened in the far wall.
Blake’s warning proved hard to follow, at least for the faunus herself. As the team made their way through the laboratory, past steam pipes and through air ducts built into the walls, she realized that her heat was starting to intensify. It was gradual, though, and for the time being, she was able to distract herself with destroying the androids and killing the mutant Grimm that opposed them.
They soon found the stage two holding tanks for the substance, and were quick to realize that Merlot was creating a sort of serum for the Grimm he experimented on, creating the mutants they encountered frequently—more so now that they were inside the lab itself. Ozpin’s instructions to destroy the vats were met with enthusiasm from all four girls; Blake welcomed the additional distraction. But as her blade pierced the vat, she was sprayed with the serum—some directly into her mouth. She swallowed eagerly, that savory, salty taste even more intense now that it had been partially processed, and she was sorely tempted to just stand there and drink it all.
But then Ruby came to help her, and the vat collapsed, spreading the serum over the floor. Blake watched it for only a moment, fighting off the urge to drop to her knees and lap it up. More androids appeared, along with more Grimm—and she found herself somewhat eager for the Grimm to appear. They were only Creeps—but one blow with those strong tails could send her reeling. Then she recalled the Beowolf who’d pinned her in the puddle, and she almost wished a Creep would do the same.
What the hell? She reeled back from the thought, and stabbed a Creep through the throat. Where did that thought come from? And why am I not so disgusted by it…?
A door opened nearby, and the girls hurried through to an elevator. Blake braced herself on the control console and Yang looked to her, concerned. She approached carefully, leaning over to look at the faunus’ face.
“You okay, Blake?” she asked, reaching out to lay a hand on her shoulder. Blake had a flash of Yang using that hold to pin her and yank off her shorts, making her gasp and pull away.
“I-I’m fine!” she exclaimed, her face beet-red. Yang look confused, glancing at the other two before shrugging.
“If you say so.” She pressed the button to activate the elevator, and they continued their descent.
Deeper they went into the laboratory, past the engineering wing and even the mainframe, where they’d found an open port for a scroll and could upload as much data as they could to Ozpin in Beacon. More androids and more Grimm dogged them. Soon enough, even the very floor was working against them, as plates flashed red before sending spikes shooting into the air. It was clear that Merlot wasn’t toying with them anymore; the mad scientist was determined to kill them. But Team RWBY was equally determined to stop him—and so they pressed on, until they finally reached another processing room.
On the wall, the words “Distillation Facility” were emblazoned in large red letters. More of the serum was held in several holding tanks. It was more blue than green now, but the sight of it made Blake’s ears perk and her pupils dilate. The rest of Team RWBY exchanged a worried look, even as Ozpin called for the tanks’ destruction.
“Hold on a minute, prof,” Yang said into her scroll before turning to Blake. “Are you really okay? You’re looking like you’ve gone through a long workout, and your eyes are all… glassy.”
“Yeah, and you’ve been really jumpy, too,” Ruby added, shouldering her scythe. “It’s like that serum did something to you.”
“I—I’m fine.” Blake swallowed hard. Sure enough, she was burning in her clothes, her skin hot to the touch. Even more, though, her nipples were solid pebbles that scraped the inside of her top—for she never wore a bra—and she’d long since soaked through her panties to stain her shorts. She was eager for the mission’s end, so she could return to Beacon and disappear into the woods for a while until her heat was sated, as she had for every other heat before. “I j-just—”
“Don’t you lie to us, Blake Belladonna,” Weiss admonished her, stepping up beside the two sisters to confront the faunus. “You’re looking feverish and flushed, and you’ve been sick since you got that liquid in you. You need to hang back and let us do the fighting for now, and when we get back to Beacon, we’re marching you straight to the medical wing.”
Blake couldn’t bring herself to admit that she was in heat—and the most intense heat she’d ever felt in her life. They knew she was a faunus, and so no doubt they knew that she went into heat every season; that was one of the biggest weapons humans used against the faunus in their discrimination against them, after all. But the visions that were starting to dance in her head—of herself being utterly dominated by various Grimm—were so taboo that she couldn’t ever share them. Grimm were worse than animals; at least animals had souls.
“F-fine,” she muttered in defeat, looking away and rubbing at her arm. Nodding in satisfaction, Ruby turned away toward the vats.
“Let’s go, team,” she ordered, and dashed off. Weiss and Yang followed quickly, leaving Blake where she stood, panting in utter need.
Even just watching the liquid oozing onto the floor from the vats the rest of RWBY shattered made Blake’s mouth water. Her hands were starting to stray toward her clothed crotch or to one breast, though she caught herself each time. It soon got to the point that she decided to meditate as she’d been taught years ago, hoping that she would at least be able to rein in this overbearing lust. She sank to the ground, back to the ledge from which the team had dropped, and crossed her legs, hands on her knees. Her breasts throbbed, as did her loins, and her shorts dug deliciously into her crotch. Taking in several deep breaths, she closed her eyes, and tried to clear her mind.
Blake didn’t get very far. The sounds of snarls and mechanical parts grinding in ways they shouldn’t indicated that the Grimm and androids had found her team again. Most were around the corner, out of sight—but one set of claws on metal was making its way toward her. Her eyes flew open again, her hands straying to her weapons, but something made her pause.
The mutant Beowolf before her was on all fours, its hideous green spikes jutting toward the ceiling. But it wasn’t being aggressive—or at least, it wasn’t charging at her. Its eyes were fixed on her, and its ears were perked forward in the same way a true wolf’s might have been when keenly interested in something. A huffing sound gave her the impression that it was taking in some kind of scent—and she had an idea of what scent that was. After all, she was the only thing in the direction it was sniffing in.
Blake should have been terrified. She should have immediately shot the thing in the eye while she had the chance. Yet she only stood, slowly, and sheathed Gambol Shroud, a growing part of her wishing the creature would lunge and pin her like she was imagining. She chanced a glance between its legs—
—and what she saw there made her gasp, a hand over her mouth.
Blake was familiar with erotic stories. She’d read many in her lifetime; Ninjas of Love was utterly tame compared to what she sought to satisfy herself late at night on her scroll, after Adam or her team had gone to sleep. So many of those stories were among the most taboo—and that included stories of people with Grimm. It was utterly reprehensible to society, so it was her dirtiest little secret. But in those stories, the Grimm shared the cocks of the animals they resembled, like they were organic creatures. Before now, Blake had really doubted Grimm had genitals like animals and people. No one was really sure how they reproduced, but no one wanted to find out, either.
Evidently, they did have genitals. Big ones. Maybe it was just this mutant Beowolf, but the black length between its legs was unlike anything she’d seen in pictures and from Adam. It was still quite clearly phallic in shape, but that was where all resemblance ended. Even as Blake watched, it seemed to shift constantly, like the rest of a Grimm’s body, swelling and shrinking in mass, and dripped another black substance similar in consistency as the serum.
At that point, Blake’s darkest fantasies, borne from those stories, seemed to be coming to life and her lust spiked exponentially. No longer could she resist; she let her hands drop as the Beowolf rose to its hind legs and stared up at it in silent consent. It let out a low rumble and took a few steps forward, reaching for her—
—only for Yang to shout and leap onto its back, gripping one of the spikes for stability as she slammed her fist into its skull and fired several shots. Weiss froze its feet with her ice, leaving it grounded for Ruby to come slicing in. Crescent Rose tore through the Beowulf’s torso, just short of Yang’s feet before she leapt off. Its upper half dropped to the ground and both halves immediately dissipated. Blake couldn’t stop the whimper that escaped her as she was robbed of that delicious-looking dick.
“There is an airship en route to your location,” Ozpin said over their scrolls. “It should be there soon. There’s a back entrance to the testing grounds just ahead—it’ll dock there when it arrives. Go quickly!”
“You hear that, Blake? We’re almost out of here,” Ruby said in encouragement, wholly misinterpreting Blake’s emotion. “Can you make it?”
“Y-yeah…” The faunus swallowed. “Lead… lead the way.”
As they hurried toward the testing grounds, Blake ended up trailing some distance behind. With her teammates so focused on what was ahead, she was able to reach up with both hands and tweak her nipples, eliciting a gasp as those tweaks sent an electric shock straight to her clit. Her shirt felt so tight and uncomfortable, she just wanted to tear it off. As it was, she was already loosening the button on her vest…
“You know… Blake was it?” came Merlot’s voice on her scroll. The other three didn’t seem to notice—he must have narrowed his channel to her scroll alone. She shivered, but couldn’t stop groping herself now. “I saw what happened there in Stage Three. I saw the way you looked at my Beowolf. I know what you wanted from him…”
“N-no…” Blake gasped again as she squeezed her tits and pinched her nipples through her top. They seemed to fill her hands even more than usual. “I… I don’t…”
“Don’t what?” Merlot taunted. “Don’t want to deny yourself anymore? Don’t want to take another step without the promise of a long… hard… dick?” Each of those last three words were drawn out, and she remembered just how long and how hard that dick had certainly been. She whined softly. Ahead, Ruby, Weiss and Yang jumped down from the catwalk.
“Please,” she whispered, one hand moving down to rub at her drooling cunt through her shorts. That only served to fuel the fire, it seemed; she couldn’t shove her fingers into her hole through the fabric, much to her frustration.
“Please what?” Though she couldn’t see him, Blake could hear the smug grin on the madman’s face.
“G-give it to me, please. Please give me Grimm cock,” she whimpered a little louder now. Her knees trembled, close to giving out even as she approached the edge of the catwalk into the training grounds. Glassy golden eyes peered down into the pit; two large, vault-like doors were built into two of the walls, and the ground was little more than dirt. But wide—if shallow—pools of the serum had formed inside the pit, and Ruby, Weiss and Yang were trying to fight around them.
A few species of Grimm were in that pit with the girls. Ursi, Beowolves, and Creeps—and suddenly, Blake could imagine each of them with each huntress. As a Beowolf bore down on Ruby, Blake imagined it scooping her up and impaling her tight little ass, a second coming up to spear her cunt, and a third forcing her head down to take her throat. An Ursa slamming its claws down toward Yang would instead pin her with its weight and thrust itself past her very shorts and panties, raping her senseless. A Creep flipping its tail at Weiss would, in Blake’s head, knock her back, disorienting her enough for it to press her into the dirt and shove its cock into her waiting hole.
With a long, drawn-out whine, whatever will to fight Blake might have had left gave out entirely, along with her knees. She dropped from the catwalk above into the ooze a short distance below. Landing first on her feet, she immediately collapsed and rolled onto her back, her hands working furiously to free herself from the confines of her clothing. Gambol Shroud was the first to go, tossed to the side, followed by her scarf and vest so she could more easily pull off her top.
Ruby shrieked. “Blake?!”
“I’m sorry, Blake, I didn’t catch what you said,” came Merlot’s voice, louder now—he was back over the P.A. system.
“Merlot, whatever you’re doing, stop!” Weiss shouted. Several Beowolves were approaching Blake, one a mutant Alpha. Yang was about to take a shot when an android appeared behind her from a crack in one of the vault doors and caught her arm; more came out to catch hold of Ruby and Weiss, too, using their distraction to immobilize them entirely.
“I wasn’t talking to you, Schnee,” he snapped. “Tell me—tell us—what you want, Blake. Go on.”
“I need their cocks!” the overwhelmed faunus screamed, even as the mutant Alpha scooped her up in his arms. His claws made quick work of her shorts, and even sliced through her soaked panties, both dropping to the floor. All she kept were her thigh-high stockings and the ribbon on her arm. Her cunt was drooling, rivulets of her juices staining her pale thighs. “I need these Grimm to fuck me!”
The rest of the team was speechless as Merlot cackled. “Oh, what music to my ears! Hold her still, my pets—I want to savor this.” As though they understood, the Beowolves kept Blake spread, holding her arms and legs akimbo, even though their shadowy cocks throbbed and dripped the black fluid to join with the pale blue-green ooze. “Oh-ho. I never noticed those ears of yours—I wondered why the serum didn’t hurt you. You’re a faunus. Oh, that’s rich!”
“What does her being a faunus have to do with this?” Yang snarled, struggling to free herself from the inhuman grip of the android.
“There have always been the rumor that faunus are descended from Grimm, and that’s why they have those animal traits,” Merlot explained. “I always dismissed it as mere racism—but it seems that there’s more truth to it than I thought. The substance I use to make my serum is related to the Grimm spawning-pools; I still haven’t quite been able to pinpoint how, but that’s why it attracts them. It’s also harmful to humans, but I hadn’t had a faunus around to test it on yet. These results are quite… mm… impressive.”
“You’re disgusting,” Yang spat.
“You’re a monster!” Ruby shouted, tears in her eyes. “Let Blake go!”
Merlot pretended to think for a moment. “No, I don’t think I will. I want to see where this goes. Go ahead, my children. Play with your new toy!”
Toy… The word bounced in Blake’s head in the few seconds it took for the mutant Alpha to impale her. That was what she wanted to be, she decided. A fucktoy for Grimm. Then that cock pierced her cunt, and no more thoughts came as her mind faded into blue-green ooze.
The scream that rent the air made the three remaining members of Team RWBY shudder in horror, but it wasn’t of pain. No, the amount of lubrication that Blake had been producing was enough to have formed a puddle in the goo beneath them, so when the mutant Alpha shoved inside, there was no pain—or at least, what pain there was from how wide her hole was stretched was instead rerouted into pleasure. Blake’s scream was that of the most intense ecstasy she’d ever known, a full-body orgasm that left her writhing on the beast’s cock just from the first penetration alone.
But they weren’t done with her. Not yet. The mutant Alpha withdrew until only the tip was inside before thrusting in again, making her scream a second time. He repeated the motion only once more before beginning to fuck her in earnest. His pack circled, eager for a turn, but knowing enough to defer to him. Even rutting the new bitch, he could still tear them apart if they challenged him.
The force of his thrusts made Blake bounce in his arms. Something about the serum had already seemed to change her, allowing her to stretch far more than should have been possible. Each time, he pressed into her, the outline of his cock bulged against the flesh of her midriff; it was almost as though she were being molded to fit his size.
But it wasn’t enough. He was only fitting half of his length inside of Blake; he needed a better angle. So he pulled her from him briefly—much to her dismay—and let her drop to the ground, face-first. She instinctively caught herself, part feline that she was, and remained on all fours, lowering her upper torso so that her head and her breasts were pressed into the puddle. It was shallow enough that it didn’t even reach her nose, but she couldn’t resist opening her mouth to take in more of the liquid of which she’d become quite fond.
Seconds later, the Alpha was pinning her down with one claw and steadying her waist with the other. Satisfied that she wouldn’t move out from under him, he shoved himself inside again, making Blake cough and sputter as she tried to gasp with a mouth full of serum and whatever the black substance was. She recovered quickly, though, and took a breath between thrusts as she swallowed.
Soon enough, the head of his cock was pressing against a new barrier. He growled and thrust a few times, eliciting a squeal from Blake. But it gave way even as he rolled back his hips, so when he slammed forward, he hilted himself inside her in one go, a portion of his dick now snug in her womb. He had no visible testicles, but if he did, they would have been resting at her clit.
The serum had been slowly changing Blake. Her tits—for she couldn’t think of them as anything else—were easily two cups bigger than they were before she’d nearly drowned and still growing. The so-called Bellabooty had even grown plushier. It had even strengthened her and added to her elasticity, so she wouldn’t break when she was given to bigger Grimm. But more than any of that, it was preparing her for breeding. The more she ingested with her head pressed into the puddle, the faster those changes came. The black precum she swallowed with the rest of it served to be a mild catalyst, and the rate of her growth increased.
Her body was being remolded to pleasure Grimm, and were she lucid enough to realize, Blake couldn’t have been happier.
She might have also been thrilled to learn that the stories got at least one thing right: Beowolves had knots. As he pounded her into the ground, a much wider growth was soon swelling at the base of his dick. With a howl, he hilted himself one more time, pressing that knot past her lower lips and locking himself in place, flooding Blake’s womb with what passed as its seed. Shot, after shot, after shot painted her walls black, and that first contact triggered the most intense climax Blake had ever felt. She couldn’t even scream properly; her eyes rolled back, her mouth gaped open, her whole body seized up, and her mind went wholly blank before she passed out from the overwhelming pleasure. He didn’t stop, though, and from the sheer volume he pumped into her, she looked several months pregnant.
If a Grimm’s precum had been a catalyst for the serum, its actual semen—or what seemed to be its semen—was ten times as potent. As it met with the chemicals in Blake’s body that were already at work on her womb, it seemed to be absorbed… and spread. Her skin went pale and black veins wound their way up her body. Her tits and her ass ballooned to near-unnatural proportions—each udder grew to at least twice the size of her head—while her nipples lengthened, widened, even darkened. The chemicals burned out quickly, but by the end of it, Blake looked drastically different.
Her teammates were in utter shock. They couldn’t turn away; the arm-locks the androids held them in prevented them from doing so. Like a train-wreck, they could only stare as their minds struggled to process what they’d seen. Soon, each of them slowly became aware of their own arousal at the sight and scent of Blake’s breaking. Weiss even shuffled uncomfortably.
The sound of an airship’s engine finally broke the stunned silence. One of the vault doors opened to reveal an airdock, and outside, a Bullhead was approaching for a landing. The mutant Alpha, still bound to Blake, snarled at the machine—but couldn’t pull away. His pack echoed him and turned toward the open door.
“It seems your ride is here, students,” Merlot said, his voice perhaps a little breathless. “My androids will escort you out.”
“Wait. We’re not leaving without Blake!” Yang shouted, blinking out of her stupor. Her eyes were red in an instant as anger—and embarrassment—rose.
“Oh, but you are. This is the greatest scientific discovery in history! I’ll be keeping her here for further experimentation. Now, if you don’t mind…”
Yang snarled and strained against the android’s hold on her arms. But Ozpin’s voice finally cut through her anger. “Yang Xiao Long. Get ahold of yourself. This is the time to retreat.”
“But—” Yang began, but he interrupted her again.
“There is no saving her right now, but that doesn’t mean we’re giving up on her,” he said, albeit with a hint of reluctance. “Get back to Beacon. We’ll come up with a plan.”
“I do wish you the best of luck, Oz,” Merlot responded smugly. “I’ll certainly be waiting for you.”
“Be strong, Blake,” Ruby murmured, gazing tearfully at her unconscious teammate, still held up by the mutant Alpha tied to her. “Please don’t give in… we’ll come back for you.”
With that, the girls were dragged bodily to the Bullhead that had come to dock at the edge of the platform. They were only released when they were shoved into the open cargo doors. The last thing they saw as the doors closed on them was the Alpha hefting Blake’s unconscious and dripping body to drag her out of sight, followed closely by his pack…