On the way back to her room

As Sarah exited the bathroom and entered the corridor she could clearly and loudly hear the jingle of her smartphone. But on the way back to her room she passed the door of her brother's, and that's when a different sound caught her ear. Or rather several different sounds that she was all too familiar with, because the walls of their rooms were really badly soundproofed: The sounds of Adam jerking and getting off. His moans, his heavy breaths, his fapping.

Sarah was certain that her brother was still a virgin, as he spent all his time in front of his PC. And that seemed to be the place where he spent his sexual energy as well. As far as she knew he didn't have a girlfriend and had no real experience at all. Perhaps it was time to change this and show him how much more pleasure you can get with the real thing?

Only a few minutes ago in the bathroom she had been afraid to reveal her spectacular transformed body to her own brother. But now all of her earlier doubts and reservation were completely gone. Sarah looked down at her futanari behemoth which was still at full mast and began to leak precum again thanks to her lewd thoughts. Oh the pleasure she could bring Adam with her appendage. And the pleasure that she could receive: She could teach her brother how to be a good little cocksucker and pussylicker.

As Sarah contemplated on her course of action, she noticed how the ringing of her phone had stopped.