"It just makes her cum harder feeling her own brother overpower her. Especially in such a degrading way, mercilessly ploughing her soft butt, purely for his own pleasure.
She practically begged him to take her, but the way he is pinning her down and rutting her like a beast makes her feel like she finally found her purpose.
She wonders what's worse, that she is addicted to her brother's cock in her guts, or that she wants to go further. He could have her when she's passed out drunk or tie her up in the woods where noone can here her screams and she'll do whatever it takes to serve him.
All guilt vanishes as her brother's heavy balls explode and she feels the jets of his hot incest cum flooding her bowels. He growls and gropes her tits and ass with the final, slow, long strokes inside her butt making her squeal and convulse uncontrollably as her body betrays her with the wildest organs of her life"