The Callous Prince's Beloved Vengeful Princess Consort

She could have been a beloved daughter of heaven, adored by countless people, but after a palace coup, she became a surviving member of the former dynasty whom everyone wanted dead. He could have become a young emperor with the power to turn the world upside down, but willingly dimmed his own brilliance for her, becoming an idle prince instead. Years ago, it was love at first sight, and nothing in the world could compare to her. Years later, when they met again, had fate brought them together only briefly, or were they bound by a deeper connection?