My little sister, Kanae, has always been too infatuated with her older brother. One day while their parents were away on vacation, Kanae's brother caught her masturbating and watching him, causing her embarrassment. As she grew up, her breasts became large and she teasingly offered herself to him, saying "Can't you do whatever you want with your cute little sister?" Unable to resist his sister's alluring advances, he finally gave in...