Teach that arrogant big-breasted sister of mine a lesson by making her wear perverted cosplay! One day, as I was getting hot and bothered looking at my defenseless sister with her cleavage fully exposed, she said, 'If you get 100 points on the next test, I'll do anything you say (laugh) but you can't do it anyway!' Her condescending words made me explode with anger and lust, so I started studying like crazy! The result was 'How about that? Perfect score! Now listen to my request,' and I forced her into perverted cosplay, turning the tables and making her my obedient pet! I satisfied my desires by groping her G-cup breasts, making her cum from shame, and then fucked her!
