[Size Difference, Growth, Teasing]

"You know, when I saw you at the gym, I didn't think you had it in you to lift that much. But you're a real champ, the best of the best!"

"Now you're just trying to get on my good side, Nikki. But for you, I'd lift a whole mountain. If I could, anyway. You know how it goes, gotta impress your girl with what you do best."

Two unlikely individuals were making their way into a cozy little home on the outskirts of town. At least, given the way that the two dressed it seemed like they wouldn't naturally be attracted to one another. But looks can be deceiving, and that's exactly what the shorter of the two's looks did.

The shorter individual was a gal by the name of Nikki. Born into riches, molded by the way she had been raised, and all the cash she had at her fingertips... She was a brat at heart. Which was why she was on the hunt for the champ. The kind of man that could sweep her off her feet and do anything she asked for with little more than a kiss. And the man next to her, the man who had shown that he had what it took... He was the one that she was going to experiment with tonight. If he could handle her, then he was a keeper.

By contrast, the bigger man was a bunch of muscle, clad in little more than a set of boxers as he let the open evening air blow the sweat off his body. His name was Frederick. While most of his friends called him Fred, he really did prefer his full name. Always introduced himself as such. But Nikki? She was the first girl that actually bothered saying it. Which was why he had worked so hard to impress her. Sure, he was still a bit sore after he lifted double his normal weight limit, but love can push people to do impossible things. And the love he felt for her was certainly true. At least, that's what his heart told him. And he never doubted his heart.

"So, this is your place?" Nikki asked, whistling a bit. For a hunk, he had a quaint sense of personal space. A place by a river... If she didn't know any better, he'd be the type to go out and train every morning, just to make sure that the blood was pumping. "Bought it yourself, or did you get it from a family member when they kicked the bucket?"

Frederick shook his head. "My old trainer gave it to me when it was time for him to head to the old folks' home. Told me that if I wanted it, I could have it. Especially if..." He paused, narrowing his eyes a bit. Even though he definitely loved Nikki, was he willing to give away a personal secret this early on? What if she wasn't into it? What if...

"Especially if you get all hot and bothered and start making out while you're still smothered in sweat?" As if she read his mind, the love of his life gave him a peck on one of his pecs, giggling as he blushed. For such a big hunk, he was a real softie underneath. Which would make what came next all the more fun...

After all, now that they were all alone... She was free to put her powers to good use.

"K-Kinda." Frederick muttered, rubbing the back of his neck. "Truth be told, he always wanted to hook me up with his granddaughter. But she didn't head down the same path that I did, and I didn't wanna force her. But... The few times we trained together, when we got all worked up, just laying against each other as we caught our breath... God, she teased me so bad when she found out I got hard from it."

"Anybody would, you dope." Nikki giggled as she slowly grabbed him by the shorts, just to check if he was nice and hard already. "Especially if they knew you crushed on them. You might be built like a brick house, but you're definitely missing a few pieces up there. Don't worry, I'll make sure to teach you a few common cues. Just in case this doesn't work out, whatcha say?"

Frederick nodded a bit, squirming as he was incredibly and almost painfully erect. "I... I really want this to work out, but if you're offering." He said, letting a smile paint its way onto his face despite the way his love played with his rod. He hadn't been this smitten with a girl since his trainer's granddaughter knocked him flat on his ass. And Nikki... Well, she wasn't as strong, per say, but she did have that same dominant edge to her. What else could he say to describe the way she manhandled his junk? "So, would you like anything? Or-"

Before he had the chance to truly offer her a bite to eat, he found himself tossed onto the floor. Or rather, pushed onto his back, with the shorter girl licking her lips and climbing onto his chest. "Oh, don't worry, you big softie. I've got all I wanna snack on right here in front of me. You mind if I dig in, or do you want some of that sweaty foreplay you always wanted from her?"

Seeing her sit on top of him was enough to make the muscled hunk feel a little... Inadequate. Which, in turn, made him pitch a rather large tent inside his boxers. "W-Whatever you want, I'm on board." He said, keeping that smile on his face as long as he could. He had been grounded by that girl before, but... This was different. Maybe it was because she was so much shorter than his trainer's granddaughter... Or maybe it was because of how aggressively sexual she was. Either way, he'd be lying if he said he didn't like it. So he played along for now, to see where all of this would be headed.

Nikki giggled a little bit. All while her eyes subtly started glowing. "So, what else did you like about that girl? If you'd like, I could make her disappear completely. From your mind, anyway. I'm sure I can give you a night that'd be more worth remembering than her." She chimed, as she leaned down to look him straight in the eye... And give him a little kiss as well, pecking right on those manly lips of his.

He didn't get to answer immediately. But he really did like it when she threatened her memory like that. She had been a bit possessive too, before she decided to cut it off. He wanted to feel like he was owned by her. Or at least, that the only girl that mattered to him was her.

Even as he didn't let his fetishes leak out of his mouth, she could read it right off his face. And the more shameful pleasure he felt from her teasing, the more her powers activated. Because she had been keeping a thing very secret from boys like him. Something that she only found out after she grew old enough to fuck around as she pleased.

Nikki had some succubus blood in her. She wasn't a halfblood by any means, but she did have some abilities as a result. And hers? All focused around making her partner feel shame. If they felt aroused by that shame, she'd drain a bit of their power. Not anything that would cause them to grow weak or anything, it was a harmless bit of power. But it allowed her to turn the tables and keep piling the shame on. Nourishing herself on their reaction, so she could make them her plaything...

"Bet you were super focused on her tits too. I know you've been looking, don't try to lie." Nikki grinned as she leaned up ever slightly, her growth allowing her to pin the muscled 'champ' between her tits with ease. If he was even close to clever, he would've probably realized that something was dangerously wrong when this happened. But judging by his reactions thus far, he'd have to try harder...

Frederick let out a moan as he was shoved into those fat, sweaty tits. They were the biggest part of Nikki's body, and they damn well felt like it. It was like he got stuffed into a marshmellow with how soft they were. They even sounded a little they were full of something. Definitely none of the fake stuff, if that was the case he would've probably gotten a black eye from being shoved inside. No, she was all natural. Just like he was.

What was his response? Well, it was very simple. He pulled his head out of her cleavage, and grabbed ahold of her shirt with his teeth. Yanking that thing down in one fell swoop and freeing her puppies so he'd have full access to them, latching onto the nipples and sucking like his life depended on it.

Nikki let out a moan herself. Mmmph, it felt good to have somebody mess around with them. Had been a while since she had a hunk who took his time and let her try to dominate him a bit. Of course, she was just letting him have his fun before she'd turn things around. He hadn't even realized that she was the same size as him at this point... And she was just going to keep growing as long as he kept feeding her that shame.

It felt so good to play with these breasts. They weren't just soft from the inside, they were soft all the way around. Even just sucking on them was a delight. It made him feel like a kid again... But there was no milk in those breasts. He couldn't get distracted. He had to prove that he was the one for her. And the only way that he could think of... Well, it was to show her how strong he was in bed, wasn't it? Then again, how was he supposed to get her down there, if she had been the one to pin him?

"You're a real Momma's boy, huh?" Nikki teased him, slowly letting her hands ruffle his hair. And she could feel him warming up as he did. "Don't blame ya. I've seen men that just melt when they held like they're a lil' baby. Maybe you're just like them?" She giggled, as she slowly got off him, adjusting her position so his head was on her lap, all while he kept suckling from her breasts. It wasn't hard to move around while he was doing it either, because he slowed down while she was moving. What a nice boy he was.

Frederick trembled a bit the more he suckled from those breasts. He wasn't... Was he into that kind of play? He honestly didn't know. All that he knew was that his cock was growing harder the longer he spent on her lap. All while it tented away at his boxers. Thank goodness he ordered a special pair a while back, so that he wouldn't have to worry about them snapping off when he least expected it. Seriously, with how girthy his thing was, he had to get pants specially tailored to his needs. It was partly why he didn't really bother wearing a lot of clothes when he went outside anyway, because with his routine his muscles quickly started to outgrow his needs.

Not that Nikki much cared about why or how he decided to dress himself. She saw a hunk, she could feel his shame, and she was going to milk every little droplet out of him to make sure that she was getting everything he was worth. Especially as she reached into his shorts and started to play with that thick thing, giving him a nice handjob as he continued to suckle on her tits like she was his beloved mother...

Frederick trembled as he had his cock milked. It didn't take long for him to cum, honestly, because he was already so intensely on edge. It felt like he was walking on needles, and it wouldn't take much for him to blow completely. But it was okay. Because Nikki was the one making him cum. Even if he-

The second that he started to cum, the dynamic between the two shifted rapidly. He found his head nearly slamming against the floor below, and before the cum had the chance to leave his urethra, he found a pair of lips wrapping around his cock, all while his face was practically swallowed up by a thick set of cheeks. With intense speed, she had forcibly sat on top of him to make sure she had a good seat for her to indulge herself, and then swallowed his entire cock in one fell swoop. She was all the way down to the base of his cock, the shaft bulging out her throat as she felt that salty nectar pouring its way down into her stomach.

If there was one position that was more humiliating for him to find himself in, it was this one. Not because it didn't feel good, it was goddamn heavenly. But he always thought it would be embarrassing for somebody like him to be pinned underneath a girl. Even one that he loved. So as much as he was enjoying the sight of her fat ass trying to use him as a seat, he couldn't help but feel a bit of shame pouring through him.

And finally, he noticed it. He noticed the way that her powers worked, as those very same cheeks visibly grew an inch in front of his eyes. "W-WhaaaaAHHHH-!" He cried out, his climax bubbling to the top once again as he tried to keep himself steady. But with that much cum rushing from his balls, there was no way that he could stop anything. All he could do was just let it all pour out, while Nikki drank it all down without even breaking a sweat...

Once the flow stopped, and his balls seemed to have dried up, the glasses-wearing succubus-blooded girl giggled as she popped her lips off that fat rod. All while tilting her head across her shoulder, her eye gleaming as she peered down at the hunk stuck as her seat. "Enjoying the view? Looks like you finally figured out that your new lover's a bit more than you might be able to handle!"

Frederick felt the sweat pouring down his body. She wasn't wrong. If she was able to grow, then... Then she'd be impossible to compete against. But at the same time, that was exciting, wasn't it? He would truly be outmatched... Just like he honestly wanted. Something that he had always wanted was to see somebody push past the level that he had reached through training. Somebody that could put him in his place. Whether it was his trainer's granddaughter, or now her...

Admitting that need inside his heart was more than enough to force Nikki to grow a little more, lifting her ass off his face so he could get a better view of her body. Indeed, just a glance was enough to tell him that she was at least three feet taller than him at this point, and that was before she started growing by feeding off his interest in being dominated by a bigger and stronger woman...

"You really are kind of pathetic, you know?" Nikki giggled as she towered above him, her body casting a shadow on his as she wrapped her hand around his shaft. Stroking it as it quickly grew erect once more. "You put all that work into your muscle, and yet you want to be the one receiving? You want to be the one listening to somebody better than yourself. Even though you make it harder and harder for somebody to get there. You should just submit to the nearest girl if you really want to be dominated, you contradicting hunk."

The verbal abuse wasn't helping him recover from his own twisted fantasies. Especially not as he saw the sweat pouring down her body. Was that because she had rubbed up against him? Or was it because she had gotten exhausted from playing with him too much? Whichever the case was, it was hot to see her being as sweaty as he was... Which in turn made his cock grow rock hard in her grip, causing him to let out a powerful moan as she squeezed it hard.

She kept on grinning and giggling as she grew another foot from that shame she felt pouring off him. "Really? You're still having those fantasies? You almost make me pity you with how badly you're into this." Nikki laughed as she reached towards the boy's cheek, all while she stroked that rod even more. Laying down beside him, pushing her breasts against his body. Even now that she was so much bigger than him, she was still trying to make moves on him, despite how she attempted to humiliate him. "But... If you just tell me what you want... I might just give it to you. Doesn't that sound like a fair deal, Frederick?"

Even after everything she had said... She still used his name. That was what he wanted. Even though she was bullying him, teasing him, making him feel like he was nothing... She was still using his name. And even if that delight was making her grow, it gave him the inch he needed to try and tell her exactly what she wanted. The little bit of confidence that he needed to face the giant in front of him.

"I want... I want to make sweet love to you, Nikki. I want to have you pin me down, press your sweaty body against mine, trap me between those massive breasts of yours... All while I do my best to ram as hard as I can into your pussy. That's what I want!" Frederick cried out. It was the strongest thing that he could do. Admit his own wants and his needs... Despite the fact that they were that of a weak man. A man who wanted to be dominated.

"Music to my ears."

With another giggle, Nikki's growth finished. Compared to the six feet of muscle and manhood that made up Frederick's body, she was now about three times that size. A good eighteen feet of pure bratty goodness. All devoted to the man below her. Or rather, devoted to pulling more shame out of him. But she wouldn't grow any further than this. This was more than enough for her. The rest she'd suck down would just be icing on top.

She did exactly what he had asked for. Pinning him below her. Pressing his adorable face in between her massive breasts, which were now twice the size of his head. Honestly, it was harder to make sure that he fit in between them, while also letting him fuck her. That was one of the worse parts of her power, but it didn't really matter much. If he wanted to fulfill his own wishes, then he had to do a bit of the heavy lifting too. Emphasis on heavy, considering the mass of her current size.

Frederick couldn't really see anything while he was trapped within that sweaty cleavage. But he knew what his instincts told him. And that was to firmly grasp the ass near the bottom of his arms' range. With that grip, and with the knowledge of where his cock was relative to the rest of her body, he could do what he always did best.

He lifted her up. Ever so slightly. Just enough that he could feel the bratty giant's wet snatch. Once he felt that his cock was properly aligned with that hole, once he felt that he was ready to slam into her as much as he possibly could...

With a primal cry, he went for it. Thrusting his cock as deep into her folds as it could possibly go. It didn't matter that she was bigger than him. It didn't matter how she had humiliated him. All that mattered was the love that they were making. Together.

Nikki grinned a little as she felt his rod pierce into her rather huge snatch. Normally, she wouldn't feel much. A natural result considering how huge she had gotten. But this hunk? This stud? Despite the fact she was three times his size, despite the fact that his cock shouldn't really be able to fit inside her and make her feel anything worth her while...

She could feel it. Maybe it was because he put more power into it than anybody else. Maybe it was because she had underestimated him. Or maybe, just maybe... Maybe she had actually started to fall for him. She had to admit, there was something absolutely delectable about the way that he just admitted his kinks and his fantasies without needing her to prod him too much. But he still wasn't done with her, now was he?

Nikki pressed down on him with her body. Trying to make it harder for him to press into her. Challenging him to go even further beyond his current limits. He had done it with his weight lifting. It'd be a shame if he couldn't fuck her like he had never fucked another woman. That was what she wanted to see from him. Then, and only then, would he truly be worth it all.

Frederick felt the weight she pressed down on him. And despite the sweat pouring down his body, despite the fact that he felt like his body wanted to scream out and force him to submit... He wasn't about to stop here. Not when he was this close. And so, with all of the strength in his body...

He pulled back. And then he shoved back in. Reaching as deep into those folds as he possibly could go, letting his cock sink all the way through her folds and the inner tunnel, until he managed to kiss the entrance to her womb. Then, and only then, did he feel satisfied, as he let out a powerful cry and let his cum splash into her. At least, what cum he had left after she milked him before.

Nikki couldn't help but giggle a bit as she felt that inner kiss. He really did push as far as he could. Even further than she thought he would. She really didn't expect him to manage to kiss her cervix. But that was part of what had made her fall for him. So much so that even as she felt him growing limp after cumming inside her, outright passing out while filling her insides with the remaining cum he had pent up...

She couldn't help but giggle as she looked forward to the next time they'd see one another. And if she knew him well enough, he'd find her. Even if she left nothing behind...

---

The bell rang.

"Come on in. The door's open."

Nikki's voice echoed, as the muscled stud that she had slept with the night before stepped inside. It hadn't even been twenty four hours since they made sweet love to one another, and yet here he was. With a determined look on his face, and a bright smile.

Frederick cracked his knuckles a bit, even as his cock grew hard in his boxers. Even as he saw Nikki growing bigger in front of his very eyes, just like she had back then. Just like she would, when the two would make sweet love to one another once again.

"So, Champ," Nikki giggled, spreading her legs as she beckoned him to come closer. This time, she'd let him pick the pace. To see how he'd do when he was in control...

"Ready for Round Two?"