Something to brace against.

Izzy whispers an incantation, something sibilant that leaves odd echoes in your head. Then she stretches one hand forward, palm out.

The air resists her, shimmering, as if she'd touched a wall. She leans forward, braces both hands on the immaterial barrier, then angles her hips back at you. "Now," she breathes.

The angle isn't obvious, but you find it, adjusting your stance, one hand on her ass, the other on your cock. You guide yourself between her thighs, and she whimpers, reaching down with one hand. When she finds you, she moves you an inch, nudging the head of your shaft into her soft wet cunt.

You both gasp. You find her tight, the angle not perfect, but good enough for you to push deeper. She gives a loud moan as you slide halfway in, and her cunt squeezes, making you weak. Her hips quiver under your hands, shifting as she adjusts, as she leans forward against the magic wall.

Then everything is suddenly right, and you push, sliding your cock all the way in, tight and deep and smooth. Her head jerks up as she sucks in a breath, shoving her hips back at you, driving you a fraction deeper. When you thrust again, she cries out, "Oh, oh, oh, OH…"

With your third thrust, she shouts, coming, raising up on her red toes, cunt squeezing again. You can't help fucking her hard and fast now as her cries bounce off the walls and her body shakes against you. Just as her climax starts to fade and her shoulders start to sag, your cock starts to swell. She reacts to your new eagerness with a moan, bracing once more, letting you thrust as deep and hard as you need.

You hurl yourself against her as your climax hits. She gives one loud cry as your cock bursts inside her, as her second orgasm seizes her, shuddering through her body and cunt. You both come together, moaning and gasping, sweating, helpless, lost to each other.

When the storm passes, you're both panting and barely standing.