Apotheosis/Atlas/Backstory/Grab her hips
Your hands move towards their closest target, and you touch her lower body. There is no reaction from her at all, which means that she's very much okay with you fiddling with her body while she services you. You don't really grab tight, as you want her to be able to move freely.
While you lean comfortably against soft cushions, she does her best to keep her body erect in an upward position through her increasingly faster, relentless hip movement. You can feel her pussy clamp down on you hard, and you can feel her muscles convulsing slightly. Your entire shaft is already glistering wet from her genitals, and both the sound and smells are beyond erotic. Her tiny breasts bounce up and down ever so slightly, jiggling like a pair of tiny puddings. Both her exposed clit and her nipples are sticking out, all stiffened out. You can even see her sweating a little bit. Her eyes are now closed, but her mouth remains open, with her constantly panting and breathing heavily. She's also letting out occasional high-pitched moans. You can tell that she's not holding back or pretending anymore. She's not playing around or trying to keep any tough acts. She's acting true to her desires, and in a very honest way, that just makes you look at her in more positive light.
As for yourself, you really want to cum. It's not that she's trying to hold you back, or to slow you down on purpose. No, it's just that you just need that one quick burst to bust a nut inside her. Would you be in control, you probably would've already lost yourself to pleasure, but your position does not allow you to piston properly. Your hips do start to move a little bit, providing counter movement to her pistoning. This, too, seems to be something that she's not paying any attention towards. No, it's actually more than that, as she seems to be enjoying your co-operation greatly. Her moans don't lie; they're becoming wilder moment by moment.
Little, tiny teardrops appear on the corner of her eyes as she slows down. She looks as if she's completely losing her composure and ability to concentrate. You know it's because of the intense pleasure, mirrored in her entire being; through her face, through her movements, through the way her pussy is clamping down on you, and most importantly, through her voice and words. "Cumming…!" She announces her orgasm in a single word, and the way she says it makes it sound like a squeal.
Her halted movements are the catalyst for you to push harder. With your hands already on her hips, and with you able to reach your legs to the ground, you feel like you can put some weight into your movements. Honestly, you could've done this previously, but you resisted. 'No more', you tell yourself, and you begin to bang her to the best of your ability.
"Ahh, hold on…!" she moans, letting out a weak and unconvincing protest. "Please, not so rough…!" Despite her voice, her moaning is wild, and she can't even keep her tongue properly inside her mouth. The way her body bounces and pushes down on you proves that despite anything she says with that lying mouth of hers, she absolutely loves being fucked raw by your dick. Besides, the tone in her voice is so lustful that she might as well be saying the exact opposite of her spoken words. "Slow down…! Please…! You drive me mad…! Your dick is going to drive me mad…!"
All her words manage to do is just make you rougher. You tighten your grip around her hips and you pull her down with every thrust. Lost in a blind desire to cum, you feel the pleasure dwell up deep inside your rod, ready to release. Just as she just a while ago, you lose your ability to concentrate, and you push as deep as you can. Pulsating, your cock shoots semen straight into this girl's womb. From your prostate all the way to tip, you're burning up. The way she clamps down on you feels almost as if she's milking you, and she seems to be reveling in the pleasure, with an euphoric expression of relief spread all over her face.
It is over way quicker than you hoped it would, but you're damn sure that even if that was it, you would be satisfied.
"Oh, fuck… Who the hell are you…?" she asks, staring deep into your eyes. Both her eyes and her voice are full of pure lust. "My heart is beating so fast…"
You grin. "You're not making fun of me anymore, huh?"
She definitely looks like she's a little upset by your comment, but instead of complaining, all she does is pout. "Shut up…"
Well, having her reduced to this kind of state is kind of a victory. The power balance has completely shifted by you showing her how good you can make her feel. Speaking of which, you're not done yet. You're still hard. Your boner is not letting go, so even if you take a breather, or give her one, this is not over yet. You sit up, with your hands now on her slender shoulders, and you look her dead in her eyes. "The way you protested made me think that maybe you're done…"
"S-surely you're joking…" she says, looking down at your still hard dick, smiling.
"If you want more, just say so."
For a moment, it looks like her pride wouldn't let her to be the one asking. Certainly, had you made her do this from the start, there's no way she would've accepted, but with her in that state, you already know she's going to do it. "Please, just give me more of that dick!" she states loudly, eyes sparkling with excitement.
Yes, you've got her exactly where you want her: begging for your dick. You don't even care about milking this opportunity to have her beg more, since you're already ready to oblige.