The other day, my sister Misaki begged me to take her on a mini trip, so I took her. I had vaguely noticed that she was brother-complexed, but when she took my hand and said, 'This is a thank you,' she started licking it sloppily. I don't know who taught her, but she sucked on my toes, licked my sweaty armpits, and finally made me get on all fours and started licking my asshole. Her whore-like technique made my cock rock hard, so I couldn't hold back any longer and just fucked her as she asked. Big brother can't hold back anymore.
