I will make my cheeky big-boobed older sister who makes fun of me understand by making her do an obscene cosplay! One day, when I was getting horny with my defenseless older sister whose cleavage was exposed, she looked down on me and said, ``If you get a 100 on the next test, I'll listen to whatever you say (lol) I can't do it anyway!'' and her anger and sexual desire exploded. Miracle study hard! And the result was “Wow! Full marks! Please listen to my request.'' He forces his confused sister to wear an obscene cosplay and turns her around, turning her into an obedient pet! With my desire, I played with her G-cup breasts, made her cum, and fucked her!