ふしだらな女の妹

Your bratty sis is gone, replaced entirely by nanobots... and you are her new Master. Her only goal is to please you sexually whenever and however you want, just like a good slutbot should. To test the unit's effectiveness, you order her to feel her big tits through her skin tight dress. It is so hot to watch your perfect, obedient sex toy do as she's told. You finally get to use your sis like you'd always dreamed of...