Series by 藤間麗

Nakaba, a red-haired princess of Senan, is forced into a political marriage with Caesar, the second prince of Belquat, as a pawn in the fragile peace between their warring nations. Accompanied only by her loyal half-beast attendant, Loki, Nakaba navigates the hostility of her new home, where her unique hair color marks her as an outcast. But Nakaba harbors a secret power—the "Arcana of Time," a mysterious ability that allows her to glimpse the future. As tensions rise and hidden truths unravel, Nakaba, Caesar, and Loki find themselves entangled in a web of political intrigue, personal loyalties, and forbidden bonds, challenging the destinies they were born into.

Asahi, a young girl living happily with her parents in modern times, is suddenly pulled into a pond and awakens in a mysterious, ancient world reminiscent of feudal Japan. Rescued by Subaru, a boy from a nearby village, she is soon betrayed and offered as a sacrifice to the enigmatic Water Dragon God. Saved on a whim by the immortal and aloof deity, Asahi finds herself bound to him, navigating a strange new life filled with danger, magic, and unexpected connections. As she grows and faces the challenges of this unfamiliar realm, Asahi begins to uncover the secrets of the Water Dragon and the ties that bind them.