HUNTC-492 - Cold-hearted step-sister says 'Use a condom and do whatever you want', but goes wild when I go raw

My quiet, glasses-wearing step-sister is hard to read. After eyeing her for a while, she suddenly tells me to use a condom and do whatever I want while she's on her phone. But when I go raw, she completely loses her cool and starts moaning uncontrollably, revealing her true slutty nature.