Three thousand years ago, he was the most unruly disciple of Kunlun Mountain, and she was the youngest princess of the demon clan. Three thousand years later, he was the immortal respected by Kyushu, and she was a delicate little fox who became a demon and an immortal? The Demon King promised her three thousand years of waiting, the Immortal promised her endless reincarnations of infatuated love, the Nine Heavens Xuanji Mountain, and her longing for the world are all for you.