To follow their parents example

"Oi Bran!" The boy heard his sister whisper.

Half-anxious from being just a small distance away from mother and father, the lordling stammered. "A-aye?"

"Fuck me."

"What?" Bran replied, taken by surprise not just because of her assertive tone. Her suggestion, as fun as it might've seemed, implicated a tremendous risk that he was not so sure he was willing to take. "Right now? What if mother and father..."

His sister, however, had no interest in hearing any of his protests. "Just shut up and stick your dick inside me already." His lover then proceeded to push her rear against him. The Stark silently gulped when he felt the soft flesh beneath her linen dress pressing temptingly against his poor loins.

Bran grew hard instantly. Every reasonable thought told him that going along with Arya's plan was bound to be a disaster. But how could the poor boy reason properly when such temptation was bent over just waiting for him? Bran's hands enveloped themselves around his sister's slim waist, holding her in place. A large tent formed between his legs at the prospect. He unfastened his belt and let the fabric fall down, exposing his butt and entire manhood to the brisk air of the godswood. The Northman slowly lifted the skirt of the girl's linen dress.

He almost let out a gasp at the marvellous sight of his sister naked rear. He'd seen naked women before, of course. But nothing like this, so close and inviting him to give in to his lust. Her pale arse, soft and plump looking, imprinted itself on his mind. Bran gulped when he found the wet folds tucked in between her buttocks, such a perfect detail of his sibling's female body. Never he felt this innate instict of satisfying his increasingly aching cock so strongly. For a moment, the boy believed that the image before him was a vision of the gods themselves such.

Firmly grabbing her waist again, he noticed Arya buckle herself for what was coming next. Before the anticipation could kill him, Bran finally went trough with it. His dick sliding inside his sister's wet maidenhood with no difficulty whatsoever.

"Ungh!" The Northern lordling heard the girl quietly exclaim.

Gods, it felt like he was in heaven. The moist and warm sensation enveloping his shaft was so phenomenal that Bran had to use all his focus not to cum pathetically inside her. Breathing heavily, the boy stood half-paralysed like that for a couple of moments, too afraid of what might've happened if he started moving.

Bran watched his secret lover nod her head in that compromising position, signalling him to continue.

He had no other choice.

The Stark slowly pulled his cock until it was halfway his sister's womanhood and then slid it in again. The movement felt so good that the boy was compelled to do so once more. He kept repeating his slow but increasingly steadier motions. The sensation around his dick coupled with the feeling of her soft skin against his was causing him to have the most inappropriate thoughts inside his head (as if what he was already doing wasn't).

They showed Bran a glimpse of a seemingly impossible future. The boy saw himself sitting on the great hall of his ancestral castle but not as a mere lordling or even a bannerman to his older brother and rightful heir to their father. He was Lord of Winterfell instead. Arya sat alongside him. The Stark knew fully well what that meant. The chairs at the center of the table on the great hall were reserved for the Lord and Lady of Winterfell. If him and his sister sat there instead of Father and Mother, then..

Bran felt his cock twitch in excitement inside his sister, awfully coming close to release. Frowning, he managed to control it. Though he knew that such images were nothing more than a fantasy, he could not deny that he found himself desiring to live such a reality where he and Arya were husband and wife.

It was indeed curious that he had such feelings for the brown-haired girl when, not too long ago, it was his other sister which he desired. He hadn't even even thought of his rebellious sister as a girl sometimes. But he couldn't maintain such notions anymore, not when he had felt her naked body like he was doing so now. The truth was that he was growing increasingly hungrier for her presence at his side, obviously not as just some mere sibling.

Breathing heavily, the lordling bent over and searched sloppily for his sister petite bosom. Feeling the soft mound between his fingers, the Stark tried to push his dick deeper inside the girl until he felt hit against the tip of his cock, her womb. Bran was careful. The last time he hit that he ended up coming inside it. He would have more practice if Arya let him fuck her more times on the Kingsroad.

The boy was scared though. Scared that he might not be enough for the girl, that she would grow tired of their incestuous relationship. However, as such insecurities ran through his head, he was caught off guard when he felt his sisters insides start to squeeze his dick harder, increasing the challenge of not coming inside her tenfold. A warm liquid then enveloped his shaft.

She is coming? The Northener asked himself. The notion that he could bring such pleasure to a girl combined with the way Arya's pussy was squeezing his cock drove him over the edge.