She agrees and gives you an oath of loyalty

Your redhead sister looks at you as she considers it before smiling as she replies.

“You offer me my own fiefdom, the ability to influence the kingdom's politics, and give me free reign in my sex life... Then of course I agree!” She says enigmatically. “I confess that I can't wait to try all these pussies that have lived in celibacy for so long..." Flashing you a teasing look she adds, "Unless of course the rumors are true that they have orgies inside those walls?” She speaks with a glint in her eye – more to herself than to you.

Suddenly she gets silent before getting up and standing before you. You don't speak as she silently opens her dress and lets it fall to the floor, nor when her underwear follows. Soon she stands before you in all her glory, naked sans her shoes.

She stares into your eyes, shivering as she sees them greedily roam over her body. You take note of her long legs, sexy hips, shaven pussy, slender waist, her perfect breasts and perky nipples, and her shapely shoulders. You could watch her body for hours, but decided to finally meet her eyes. Only then she falls on her knees before you, touching with her forehead the floor.

“I, Alexa, first princess of the ruling dynasty, second in the line for the throne, hereby swear my loyalty to you, John, my brother, prince of the ruling dynasty, the rightful heir to the throne. I will follow your every command, to the gates of hell itself, should you command so. Where you go, I follow. That I swear on my blood.”

She takes a deep breath.

“Also, I hereby relinquish any claim to the throne, as long as you are alive..." Pausing for a moment she adds, "...and your heirs are worthy.”

You can't help but smirk at that. Of course, your sister would leave herself an opening should your children be incompetent... not that you mind. As long as it's your dynasty and a competent person, you don't really care who rules. As long as your fiefdom survives. If your sister will be **** to remove your brats to make sure that the kingdom survives – so be it.

Your musings took a couple of minutes, which your sister spends motionless in her position. Finally, you noticed that and answer her.

“I, John, first prince of the ruling dynasty, the rightful heir to the throne, accept your oath and in return offer you my protection. Now rise, Alexa.”

“Finally – do you know how cold the floor is? My nipples froze.” She grumbles teasingly as she gets up. Indeed – her nipples were quite erect. She walks up to you and kneels before you.

“But brother... I still haven't finished with my oath.” She says with a wicked grin as she unbuttons your pants. Her eyes wide as she pulls out your cock and gives it a quick lick. You watch with amusement and need as she takes the tip of your cock into her mouth and surrounds the shaft with her breasts.

You clench your teeth, sucking air between them. Yup, her breasts were cold. You will need to get some carpet here.

You moan loudly as your musings are interrupted by your sister's ministrations. The cold didn't bother you anymore, as the heat of her mouth warms your cock. As your cock grows stiff and throbs with need, Alexa ceases her ministration. Walking up to your desk, with a loud clicking of her shoes on the stone floor, she bends over it, with her legs wide apart. Your cock jumps as it gives you a perfect view of her pussy juices dripping on the cold floor (and you idly noticed a bit of steam rising from the place the drops hit the floor).

“Now my liege, how will you take your retainer?” She asks as she put her hands on her ass-cheeks, spreading them apart. Giving you a clear view of her small back-door and her pussy lips quivering in the cold air... inviting you... calling you...