MIDE-597 I discovered the secret of the busty older sister, Akiyama Shoko, and she's now my obedient sex maid.

A devilish older sister always arrogantly bullies her younger brother (you). This time, I've been asked to distort my academic background and decide to start as a female student! Consequently, you'll become the junior, your status will plummet to the very bottom of the family! A golden opportunity has arrived, and for the sister who has lost all voice, time for revenge to begin after returning home is here! Akiyama Sachiko's first uniform-themed work, where she repeatedly rebels and always loses to the rooster! [MOODYZ Campaign 30% OFF 4th] has ended. * Click here for details on perks and more.