One more for luck.

"Oh God, do you know how wet you are, Felicity?"

"I can't... I can't help it. It's the serum!"

"Well I know that, but still. Your pussy is crying out for a cock to fill it." You start to pump your fingers in and out of her hot, wet, pliant hole, making her juices trickles out onto her thighs and down onto her dress as she lies on it.

"It's not!" She gasps, "Oh! Oh! Uhn! Aaahn! The body can be played like... like an instrument..."

"Like I'm playing you?" You grin, even though she's facing away from you now, her eyes closed trying to fight the feelings that are taking her composure apart piece by piece. You slip your fingers out and spank her clit a couple of times.

"Eee!" She squeals like a dizzy, college girl, not the smart, deadly scientist you saw before. Her hair band has come loose a little and strands of her hair are getting plastered to her face with sweat. Still, she's the most beautiful woman you've ever seen. Her ass cheeks quiver as her muscles spasm. "No! Stop! I mean that the body cannot resist some external chemical... oh! Oh no! Oh please stop! Please!"

"I'm going to win any second now aren't I?" Her pussy is so wet, so wet but still so tight.

"I have... I have more control over my body than you..." she whispers, determination cutting through the erotic pants and moans that she can't control.

"Let's speed things up then," you say, and prick her with another of the grey feathers, in the other ass-cheek.

"No! No!" She's squealing now, and has even more strength, almost managing to rise up onto her knees. "What did you do?"

"I doubled the dose."

"That's... that's crazy! You don't know what you're... what you're doing! It's dangerous."

"I think you can handle it. I think you take a lot of your own ****." You slip your fingers out of her spasming cunt and stand back, stroking her juices onto your thick cock as you watch.

First she raises her ass up, quivering and shaking in the air. Her head is still on the ground, but her knees are bent and her ass is up and shaking. And the juices now... they're trickling from her steadily as her pussy flutters and clenches without anything touching it at all. Then she lies flat again and... oh good grief, she's trying to hump the floor. Should you feel guilty for reducing this Goddess to this? You can't, it's just too hot.

Finally, she gets the strength to work herself to her knees, and from there, hands still bound behind her, she totters to her feet.

"P-Please," she stammers, turning to you.

"Please what?" You cast around for, and quickly locate a pair of scissors. As she stands, swaying, her eyes half closed, her previously perfect hair tangled and streaked with sweat, you cut through the shoulders of her dress and slide it down her luscious body. Felicity, stunning Felicity, stands before you naked, restrained, crazed with lust, her pussy dripping helplessly on the floor between her legs.

"Please I need to come. It'll... it helps to get the serum out..." She's slim, but with breasts a little too large for her frame. You cup them, lift them and pinch the nipples.

"But if you come, you'll lose," you frown, feigning concern.

"Haven't I...?" she struggles to focus on you, peering out from between strands of her hair. You take her hair band off and toss it away, letting her shake her hair out. It still sticks to her face. "Haven't I already lost?"

"Not yet," you say, and cup and squeeze her full, heavy tits again. And as you do so you thumb her nipples... and her knees buckle and she lets out a broken whimper of defeat.

"Oh... Oh no! Oh God not like this!" She doesn't fall to the ground, but her knees bend together cutely and you see a fresh flood of her girl-cum wet her thighs. The flush on her chest, the blush of her cheeks.

"Did - did you just come?" you ask.

"Mmmnn! Ahhn! Yes! Yes I came! I came... from my tits! I came with my tits, I can't... I can't believe... it's the ****... It's not me!"

You've won. You've won and you can still do whatever you want with this fallen angel.