Beautiful dentist Shihori Endo had achieved wealth and fame, living a life of material comfort with no wants or needs. Yet her heart and body remained unfulfilled—because of a secret she'd long kept hidden: her exclusive attraction to women. One day, she meets Yuu Kawakami, an office lady who comes to her as a patient. Shihori is instantly captivated. Their relationship gradually deepens beyond doctor and patient, drawing her inner darkness into the light while awakening new emotions through Yuu's pure and genuine feelings.