"If I get a perfect score on the test, you'll do anything I say", right? The arrogant sister who bullies her younger brother and role reversal! During the three days when our parents are away... Every day, facing her defenseless big breasts and huge ass, I couldn't help but plan to make her wear lewd cosplay and humiliate her to orgasm! But my sister got angry and refused while wearing a cosplay that exposed her tits, so my sexual harassment training escalated! From blowjob orders to moaning in pleasure, wild back-pumping! Gradually becoming obedient, I made my perverted sister understand during a climax with internal ejaculation!
