After her father remarried, Kaede began living with her new mother, Hibiki. Hibiki is always teasing Kaede, but in fact, she is a bisexual woman with a strong sexual appetite, and has had her eye on not only her father but also the young and beautiful Kaede since before they got married. With a sudden kiss, Hibiki gradually draws Kaede into the lesbian world. Kaede has no way to resist her...