Until you looked at Mercurius (Fantasy Creatures)
From Create Your Own Story
You feel suddenly overwhelmed with the need to fuck. Your eyes set on Mercurius. It has to be him. You need him. No other will do. He looks at you with partial fear and partial lust. Your approach him.
"No!" his sister shouts. "Don't fuck him, fuck me!"
But you're already set. There's no changing your course now. You grab the cute blond boy, and turn him around forcibly. You pull out your eight inches of green, then pull down Mercurius's boxers. He has the most perfect ass, round and firm, and yet soft and plump. Without any of the proper preparation, you thrust your mighty rod right into his ass. He cries out in pain. In less than a second, you've speared your whole cock into him. You know it must've hurt, but your lust for him has become too great for you to care. You begin quickly thumping in and out, violating his hole. He wails loudly, his cries some combination of pleasured and pained. His sister watches, and begins rubbing herself between the legs, her dressed pulled up to her belly button.
"I need..." she mutters. "One of you needs to... Oh, fuck..."
"You need..." breathes Mercurius. "Orc, she needs you... needs you to fuck her... It's the only thing that'll get her off... She'll go... go crazy if she doesn't get off..."
You hear their concerns, but your mind is now gone. A slave to your desires, you only want Mercurius. If the girl needs sex to save her, she'll have find it elsewhere. You continue ravaging his ass, ignoring the girl to the side of you.
"Mercury..." she pleads. "If he's too far gone, it'll have to be—"
"No!" he shouts.
"You've got no fucking choice! I'm sorry, but you're going to fuck me. You don't have a choice. Neither of us do."
She quickly takes off her underwear as she moves around to her brother.
"Bend him over, orc," she orders.
You can do that just fine. You push him hard, and he folds over forwards. You see his sister shove his head under her dress, her right leg coming up onto his shoulder. The three of you begin making the most obscene noises. You grunt at every thrust, with Mercurius groaning continuously at your movements, while his sister purrs at the feeling of her brother's tongue between her legs. The door is still wide open, so anyone who happened to walk by could potentially witness your depraved ménage à trois. You don't care, though. The only thing on your mind it satisfying the raging hard-on you have for the cute ass currently sheathing your cock. The depravity of it all suddenly gets to Mercurius. His anal walls begin to tighten as his cum begins to shoot out. You blast out as well just from the sudden squeeze, shooting out a rediculous amount of cum right into the poor boy's colon. The sight of her brother cumming sends Mercuirus's sister into a frenzy. Her hips buck madly as she climaxes, her lewd juices soaking Mercurius's face.
Freed from the potion's control by her orgasm, the girl quickly turns away from you both out of shame. You take your cock out from Mercurius, putting it back in your trousers. Mercurius falls forwards, hitting the floor with a thud. He's fallen asleep, and just lies in the spilled juices of the three of you.
"I suppose we're under arrest now?" the sister asks. "That's assuming you're a guard."
How do you reply?