My arrogant older sister, who always looked down on me, has suddenly reversed her stance?! Absolute obedience to the king, allowing me to indulge in playing with J-cup breasts for 30 minutes every day. Gojo Ren, SONE-710

You're so stupid. My sister laughs at me every day for failing my exams. "Are you going to tell our parents?" I'm threatened with this every day. One day, I accidentally witnessed my sister masturbating at night! I instinctively filmed it with my phone! The next day, I showed the video to my sister, who always bosses me around, and told her to be good. "Okay! It's only 30 minutes a day…!" And just like that, I successfully reversed the master-servant relationship, and I can now enjoy my sister's fluffy J-cup breasts at will! First, I knead them to my heart's content… Wow! My hands are practically overflowing! Then I have her clamp my breasts… Breast sex feels so good! Washing her body in the bathroom… Her whole body is as soft as cotton candy! Even when she's asleep without warning… I can do whatever I want with that voluptuous body. Let that arrogant sister know who's the boss!