They are the twins of the miko. Carrying the blood contract of the clan, the elder sister can hurt others, and the younger sister can save others... However, the price is their lifespan. Between the older sister and the cold Tezuka, the gorgeous Atobe, and the arrogant Ryoma; between the younger sister and the sinister Fuji, the gentle Yukimura, and the handsome Shiraishi, what choices will they make?