Screw it! You wanted this demoness inside you, really. Wait around- the added roughness will be a bonus! (not done)

It doesn't take long for the performance to conclude. You doubt you'd have any hope of overpowering this demon, even with trickery- besides, you don't really want to.

The affects of her spell are instantly apparent. With a light tingling sensation on your backdoor, you soon start to feel your anal walls tighten, quite considerably. Your whole passage feels incredibly sealed, like you're contracting your muscles closed on very potent steroids. She smiles, noting your reaction as a success, and bending back down to her previous level. Again, she deposits her sticky precum onto an out-stretched finger, and begins to add more lubricant to your butthole. Glancing up at you to gauge your reaction, she tries to a slip single finger into your hole- but to no avail. Your anus pushes right back, barring any entry. Arisa smiles a devilish smile at you, very pleased.

She holds her finger up to your shocked, open mouth, and you instinctively, greedily slobber over its length. Withdrawing, she tries again, with more ****. Pressing her fingertip in deeply, she manages to fit a single inch inside, with unreal effort required. The sensation though- damn, does it feel amazing. You let out a stifled moan as she plunges another inch inside you, your reaction causing a wide grin spread over her face. "I used a rather incredible spell on your virgin arse here." She states casually, pushing a further inch of her finger in. "Increased tightness and sensitivity- you're as tight as a vice. Don't think for a second the added sensation is an entirely good thing though- after around... A minute, two minutes, the pleasure is too much for most mortals."

She continues to shovel her finger in until it reaches the hilt, at which she begins to piston it slowly in and out of your tight rectum, releasing a passionate moan, and making your cock jitter with pleasure. "You think my single finger feels good? Wait 'til you get this massive prick inside that arse of yours. You'll be begging for more, like a real slut."

She removes her finger completely, and your arse clamps down again to it's original, inhumanely tight state. Letting you slobber further on her fingers, she continues casually- "I've heard the feeling of cum sloshing inside you whilst under the effects of this spell are truly heavenly. If you make it that far without passing out, that is."

She stands up and positions herself, aiming her giant prick at your puckering little arsehole. With a smirk and a thrust, she forces her cock towards your opening, and, expecting the harsh pain of penetration, you wince, only for both of you to be surprised that her cock can't enter. She tries again, with more ****, holding her cock in one hand, pressing it into your pucker, with no affect. A look of brief frustration crosses her face, until she, with a final, strongest possible ****, smashes her pole into your arse with a loud plop.

Even with such effort, she's only managed to squeeze her cockhead between your cheeks. With further strain, she starts to push forward, slowly gaining ground against the friction your arse provides.

You very quickly realize that her words weren't empty- you feel as if your entire asshole is a sexual organ of it's own. Sparks of pleasure fly down the length of your entire body, and ripples of arousal shoot down your anal walls as it clings tightly to her massive, girthly length.

She continues to push further and further, burying her cock in the deepest depths of your asshole as you cry- or more accurately, scream in pleasure. You feel the sensation of her heavy balls smacking against your ass, and she begins her exit, pulling her hips backwards, retracting the length from within yourself, yet finding similar resistance. As she begins to pull, your anus starts to also, your opening clinging to the base of her cock the best it can, almost trying to prevent it's exit. As she retracts, your lining behinds to retract with it, until she pulls out with another plop, resulting in your asshole's lining prolapsing briefly, before tucking itself back into your ass, still retaining it's previous, untouched state.

By this time, you're babbling, begging for her to re-enter,