By making her swallow

Like he did the day before, Bran didn't let go of her head. Arya seemed to struggle under him, but every worry also faded as his member squirted his juices. Her mouth felt heavenly, encouraging him to go deeper like he's never been before. The Stark laid back on the chair as he saw his sister trying to swallow his seed. He almost passed out in ecstasy from how good it felt. Her was so soft to his touch, like silk. It was only right that he would be the one to overpower his sibling. He noticed that in her struggle to swallow his manly juices, a small amount seemed to come out of her nostrils.

After finally emptying his balls, he loosened his grip, letting go of her. He heard her gasp for breath only to end up coughing the milky substance. Bran admired his handywork displayed by the cum dripping from her chin and the dopey look on his sibling's face.

"Are you alright?" He tried to hide his concern. Arya gave him no response. The lad's never seen her so out of it. Scenarios where he would make her his in other ways until the end of time started playing inside his head. Bran shook those scandolous heresies out of his mind and focused on cleaning the girl's face with some old cloth he found lying about.

"I think we should... umm, get our things ready. We'll be leaving King's Landing tomorrow right?" He said once he was done.

"Aye..."

"Fine enough then. Thank you for the reward." He finished before parting ways in the courtyard and sneaking a kiss on her forehead. Bran tried not to look to suspicious on his way to the castle.