Seed the whore

As the two of you are approaching climax, not caring for the third person in the room, the whore's legs come around you, spurring you on to go faster, harder. Her cunt gripping you hard, her climaxing expression and the dirty coaxing from Libitina; all of those bring you to the edge. You bury yourself as deep as you can inside your partner, as you cum and unload a huge load into her depths.

"YES!" Libitina utters, as her fingers furiously plays with her pussy, not concerned that you can see her masturbating and climaxing at the same time.

She then brought the fingers slick with her juice close to you face. "Lick it."

Despite the repulsion at the command, you lick her fingers and tasted the juice. Strangely, you feel your energy returning. Absently, you wonder if sucking Libitina's pussy would have a more potent effect. "Did I do the deed?"

"Your illegitimate mating has pleased the powers that be that they deigned to grant you the ability to turn lust into strength."

"Does that mean I can only fornicate from now on?"

"Oh, no. You can marry and lay with your wife. It's just that the union would be more 'pure' and wholesome', and not dictated by lust. But, then again, the powers would be very pleased if you commit adultery even though you have a lawfully wedded wife, you will receive more blessings."

"Surely there is a a drawback to this?"

"Yes, it is a sin to fornicate, and an even bigger sin to commit adultery. But the more you keep doing this, the more you will be addicted to the act and the lure of power. Plus, your first born is going to be a bastard," Libitina looked at the wench who is playing with herself, "borned by a whore. You, the highest in the Kingdom, and she, the lowest"

"She is going to be pregnant?"

"Yes. Don't we have a covenant? Your cum is a potent approsidiac. As long as you ejaculate inside her, the more she will desire you. And the more the two of you breed, the more energy that will flow into the bastard that will grow in her womb. Lust turns into flesh, its conception blessed, it will turn out more talented than any official heir you will have."

Now you fully understand the consequences of your action. In exchange for power, you allow yourself to be corrupted. But you don't really regret it. The sex was mind blowing, and you don't have to kill someone or publicly worship Satan. There's the disturbing situation regarding your future heir. "So, this is your **** against me? Raise my bastard to be the next king?"

Libitina giggles."Oh no, my son. It's your desire to seed her womb, even if you could have done it outside of her. I never said you must get her pregnant. That being said, you made the act more intense and hence the effect more potent. As for the child, I will be more than happy to raise it, but eventually, it would be up to you to decide whether to make it your heir."

"But you have a son."

"Who turns up wrongly due to your father's foolishness who took him away to be raised by someone else. And now your stepbrother covets your throne to the extent of everything else. The two of you will eventually fight with your lives on the line, but it would be you who will walk away from it. Even before this, you are already strong and now...* Your stepmother shrugs.

Darius. Your stepbrother who made it clear that he's the rightful heir to the throne. You're not sure whether Libitina has something to do with his twisted personality but what matters is that you have to defend yourself, even if you have to work with his mother. "I thank you."

"Your welcome. After all, we have a covenant, don't we?"

"Yes, we have, one of amity, where our souls and fates will be intertwined." you say as magic circles glow underneath the two of you.

"You please me with your quick mind." Libitina closes the distance, and kisses you deeply. After some time has passed, she breaks the kiss; the two of you panting slightly due to its intensity. "It is complete."

She was trying to trick you into entering a covenant with her. But you have decided to do it willingly.

Libitina straightens her body. "Now then, since we have achieved what each one of us wanted, why don't you stay here for a few more days to fuck? I'll send a missive and some people to help in the castle."