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