Test the hypothesis of course

Helen watched the smaller Japanese girl’s eyes dart from side to side as she sought out an escape route. Instincts Helen had never known she’d had—or maybe it was instincts she had recently acquired—kicked in. She could almost feel a non-existent tail lashing behind her in excitement as her eyes narrowed and her new male equipment swelled to full hardness.

Around her the other girls continued to talk, but it was all background noise. Helen’s focus was fully on her prey and everything else in the room seemed to fade into the background. The reason why she was supposed to fuck the girl also retreated from her consideration, to be replaced by a burning need to just do it. If M’Ress was right, This was now her primary life’s purpose. And frankly, considering how she’d spent the last twenty years she’d take that upgrade. Except for the glorious few months where she’d lived a free-use lifestyle with her son, every day had just been a variation of the day before. Whatever else those fucking aliens might have done, they had kicked her out of her comfortable jail cell of a life and into a world filled with options in the form of nubile young fuck-bunnies.

Right now Maki was practically screaming, “Fuck Me!” as far as Helen was concerned, and she fully intended to accept the invitation. She just wished her view wasn’t being blocked by the fetish wear french maid outfit the girl was wearing. The back side left nothing to the imagination but from the front she looked as demure as a nun. Helen really wanted to get a good look at Maki’s titties and see if they were as cute and delicious as she thought they’d be.

Helen had not been a lesbian, or even bi, as far as she knew, prior to the transformation the aliens had inflicted on her. But ever since she had acquired her faux manhood she had been hyper-aware of every young girl she spotted. Her old habit of weighing the pros and cons of every hot girl as a potential bride for John had gone into overdrive. She didn’t just want to find girls who would be good partners for her son. She wanted to find girls John would see as desirable and fuckable. After three months and being fucked hundreds of times by John’s cock she had a pretty good feel of what turned her son on.

While John had never turned her down when she’d slipped into his bed, those sessions could not compare to the times he slipped up behind her when she was doing the housework or otherwise off her guard and pinned her down and took her like a beast. Those were the sex sessions that left her knees weak, and needing to sit on an ice-pack.

Helen took a deep breath. She was no longer a teenager. She would not be ruled by her hormones. She was the one in charge. She analyzed the situation in front of her. She knew that John would happily hold Maki in place while she had her way with her but that seemed wrong. If M’Ress was right she was supposed to be the Alpha of John’s harem. She wasn’t sure of what that entailed, beyond fucking all the other girls, but in her own personal opinion it meant being at the top of the pecking order. She needed the girls to respect her, and to know that they did not want to mess with her. Her, not John. She’d already cowed Natalia, though she was under no illusion that she’d won that war. Now, it was time for Maki to learn who the boss hen in this coop was.

“Enough talk!” Helen said in a voice loud enough to cut through the chatter. She narrowed her eyes as she stared at Maki. “You know this is going to happen, girl! The only decision you get to make is the easy way, or the hard way.”

“You have to be joking!” Maki spat out, her eyes staring at the massive shaft between Helen’s legs. “How the fuck can there be an easy way with that thing.”

“Hard it is, then,” Helen said as she moved toward Maki.

Out of the corner of her eyes she saw John, Betty, and the doctor girl moving to intercept Maki as she backed away. “Back off!” she said firmly, giving each of them a glare before returning her focus to Maki. She pointed to one of several exam tables. “Do yourself a favor, bend over that table and I’ll take it as easy as I can on you.”

“Fuck you, grandma!”

Helen laughed. “Is this where I’m supposed to fly into a blind rage and rush at you?”

Helen continued to advance on Maki, keeping herself between the girl and the only door out of the basement. “You look pretty fit, girl. You do martial arts?”

“Why? Because I’m Japanese? I was born in America!”

“She has a black belt. But she’s here on a gymnastic scholarship.” Betty called out, earning her a dirty look from Maki.

“Really. I have a black belt too. I used it on John when he was a young hellion. Maybe I’ll introduce it to your ass one of these days.”

Maki opened her mouth to retort, but Helen had worked her way close enough that she no longer needed to keep the girl distracted. Like a cat she pounced on her prey, taking her fully by surprise as she caught the girl’s throat in one hand and shoved her backward. Maki stumbled but kept her feet, until the small of her back hit the edge of an exam table and Helen bent her backward over it. Helen moved between Maki’s kicking legs, nullifying her strongest weapons. She ignored the blows Maki did manage to land with her heels as she grabbed the neck of Maki’s outfit and yanked. Helen expected resistance, but to her surprise she heard the distinct sound of velcro fasteners pulling apart and the whole of Maki’s outfit came loose with one yank. John’s mother was surprised, but while she might investigate in the future right now she had no interest in the wrapping, all she was focused on was the gift it had concealed.

Maki was a fit muscular girl with small a-cup breasts topped with dark brown nipples that just begged to be sucked. Her belly was flat and defined and her waist looked narrow enough that Helen was sure that John would be able to circle it with both his hands. She was hairless below her eyebrows. Including her small tight looking pubic mound.

The pressure of Maki’s groin against Helen’s had pushed the futa’s cock up against her own belly where it extended well past Helen’s belly button. Maki’s eyes widened as she looked past Helen's hand and witnessed that drooling monster so close to her gate of paradise. That was nothing compared to how wide they went when Helen lifted her hips and freed her cock so it flopped down on Maki’s muscular belly. The tip came to rest just a couple of inches short of the pinned girl’s small breasts and the pre-cum leaking out of the spade shaped tip formed a small warm pool on her skin.

Helen cupped her free hand over Maki’s bare pubic mound and hooked a forefinger up into the girl’s cunt. “Just like I thought, you little slut. You’re a swamp. You can’t wait to get stuffed with cock.”

“Stuffed is one thing, split open is another!” Maki protested as she used both her hands to try and pry Helen’s hand away from her throat.

John’s mother barely noticed Maki’s efforts. As with Natalia she was discovering that she was far stronger than she’d been just a month before. It took zero effort to hold Maki in place. She could not help taunting the girl as she pumped a work-hardened finger in and out of the virginal tightness of the smaller girl's cunt. Not that she thought for one minute the girl was a virgin. Not in this household. “I don’t know. The way you’re squeezing my finger makes it seem like you’re getting awfully excited at the idea of a belly full of my brand new cock,”

There was no way Maki was going to get any wetter, and Helen found herself disinclined to make her any looser. She drew back her hips and used her hand to guide her cock into place.

“No! Don’t! Ahhhhhhggggghhhhaaaa,” Maki protested, and then screamed shrilly, as Helen grunted and popped the fat head of her dick into the Japanese girl’s cunt.

“Oh, shit, fuck, you’re tight, girl,” Helen groaned as she felt Maki’s twat try to squeeze off the first four inches of her futa-cock. She looked down in fascination at the sight of Maki’s tiny twat distended around the first couple of inches of Helen's brand new cock. Maki's pubic arch was displaced slightly and as she flexed her hips she could see the bulge shift under the girl’s skin.

“Oh, god, you’re too big,” Maki moaned as she brought her legs up and used her feet to try and push the futa away from her.

Helen released Maki’s neck and shoved both of the girl’s legs up over her shoulders before leaning in and wrapping both hands around the other girl’s slender throat. She stared down into Maki’s panic stricken face and smiled evilly. “Let's find out how good a job those fucking aliens did on your girl,” she said as she wiggled her hips back and forth while keeping the pressure on. Another inch or so of her cock slipped into the tiny girl causing her to moan and toss her head back as sweat beaded on her forehead.

“This is impossible!” She wailed, right before she clenched down on Helen’s dick as she orgasmed.

John and the rest of those present, with the exception of Neal, watched with the same fascination as lookie-loos staring at a train wreck as Helen pulled back, and then rammed forward, driving more of her cock up the girl’s snatch. A visible bulge appeared above Maki’s pubic arch.

Neal was too busy staring at John’s muscular ass with lust in her eyes to pay attention to anything else.

“Can it really fit?” John mused as he dealt with envy and jealousy. Not emotions he had ever expected to feel toward his own mother. But come on, not only was her cock bigger than his, she was fucking what had to be the tightest twat in the whole house. Would Maki even be able to feel him once his mother had gotten through reaming her out?

Beside him Betty licked her lips as she looked on with fascination as Helen began to fuck the doubled up Maki with steady strokes that drove more and more of her dick into the girl’s distended cunt. There was a certain amount of dread in her expression as well. While she didn’t technically need to be fucked by John’s mother, she had to doubt at all that it would only be a matter of time before the older woman shafted her just like she was Maki. Getting filled with John’s cock hurt in a wonderful way, but she had to wonder if Helen’s cock would just fucking hurt.

“Oh, shit, oh shit, oh shit!” Maki gasped out with each inward thrust by Helen. Her eyes were clenched shut and tears trickled out from under her eyelids to join the sheen of sweat that covered her face.

“Mrroowwww, yes, fuck her hard, Alpha,” M’Ress yowled next to John, causing him to flinch slightly at finding the alien girl standing right next to him. There was none of Betty’s dread in her expression. More like envy and a strong wish to take the other girl’s place. Said girl was howling as Helen’s strokes became longer and longer, driving the bulge in her belly closer and closer to the bottom of her ribcage.

M’Ress looked up at John with a lustful expression and leaned in to rub her cheek against his chest. Her cheek was soft and warm and the gesture was so clearly affectionate that John relaxed slightly. “Do not worry, lord. Like all of my fellow pride members, Maki received a premium package. She can survive being sexually dominated by your Mother. More importantly she will even be able to engulf your rod once you are fully grown.”

“Huh, huh, huh, hug,” Maki gasped, her breath coming in pants as Helen filled her with an ever increasing amount of cock. Her tiny body was being jarred back and forth and if her breasts had been even a little bit bigger they would have been bouncing back and forth. If it had been Natalia she’d have been in danger of getting a black eye.

Helen clamped her hands tighter around Maki’s neck and squeezed, starving her for air. The small girl’s pants became forced and her eyes flew open as her entire body shuddered as she experienced an orgasm so strong that for a moment she was clamped so tightly around Helen that her entire body was dragged back and forth as the older woman’s cock got stuck inside Maki’s overstretched cunt.

Helen was still three inches short of getting her full length into Maki, but the feeling of the girl’s cunt milking her rod like a machine was too much. She arched her back and gave a grunt as she pumped a pint or more of faux-sperm deep into Maki’s belly.

Helen stood panting, ten inches of her wrist thick cock buried up inside Maki. After a little bit of time she turned her head toward Malina and asked. “So, will that be enough, or should I top her up some more?”