A reversal of roles, turning to a submissive pet, making my arrogant, big-breasted older sister who bullies me wear obscene clothes and experience a shameful orgasm to make her understand! (Aibaoling PPPE-193)

I made my arrogant, big-breasted older sister wear a lewd cosplay outfit to teach her a lesson! One day, when I was excited by my sister's exposed, unguarded vulva, I thought, "If I can get 100 on the next exam, I'll listen to you (laughs). Anyway, it's still impossible!" My lust, fueled by ridicule and anger, erupted, and I started studying like crazy! The result was, "Wow! A perfect score! Do as I ask!" For the confused older sister, I forced her to wear a lewd cosplay outfit, reversing the roles and turning her into a submissive pet! I casually played with her G-cup breasts, making her climax with shame!