After her father remarried, Kaede's life with her new mother, Hibiki, began. Hibiki, who always bothered Kaede in various ways, was actually bisexual and a sexually active woman who had been eyeing not only her father but also the young and beautiful Kaede even before the marriage. Hibiki gradually draws Kaede into the world of lesbians from an unexpected kiss. Kaede had no way to resist…