Fujiwara Ryo has an offer she can't refuse: a marriage proposal from her archenemy. As the shogun's royal prisoner, she'd be guaranteed a comfortable life in a gilded cage. But Ryo isn't the kind of girl to take the easy way out. So refuse it she does. And now a failed revolt against the Ashikaga shogunate has left her with a price on her head and her spurned fiance hot on her heels. Ryo escapes with Sen, her loyal lady-in-waiting, to sacred Mt. Koya. There, Sen's uncle summons the mighty Kala Sarpa. If all goes as planned, the "Serpent of Time" will transport Ryo far out of the shogun's reach, across six centuries to the present day. Except that Kala Sarpa bears a grudge of its own against the Fujiwara clan, and seizes the opportunity to even the scales. Their fates fully entwined, Ryo must again put her life at risk and return to the past in order to save her future."