Yun Qiye mistakenly recognized the demon king's young son Lu Xianshuang as a mortal spiritual beast, and personally refined his origin to sacrifice to the heaven. Little did he know that the young son was a chaotic demon fetus, and a ray of soul had long been entangled with the heaven. On the night of the blood sacrifice, the sky cracked and the earth collapsed. Lu Zhanshuang opened his eyes, and the fire of eternal destruction was ignited in his eyes - he was neither a beast nor a son, but the original demon sealed by the hand of heaven. It was too late for Yun Qiye to regret it, his spiritual roots were all broken, but due to the fusion of blood, his soul and the deer were locked in symbiosis with Lu Xian Shuang. From then on, one used the way of heaven as a furnace to refine his body, and the other used all living beings as fuel to burn the devil's flames. They were neither masters nor disciples, nor enemies. They were each other's calamity and the cause of fate that was most feared by the way of heaven.
In order to ascend, Yun Qiye used the nine-layer sky thunder to refine the young beast Deer Nian Shuang, but at the last moment, ancient magic patterns appeared in the beast's pupils, and Heaven took the initiative to absorb its soul. The devil's blood poured back into him, and Yun Qiye's body disintegrated, but his soul became entangled with Lu Xianshuang and was forced to share the same broken body. In order to suppress the demonic flames, he swallowed the source of the Heavenly Dao and turned it into a breeding ground for demonic fetuses. Lu Xianshuang used his spiritual veins to reshape his body, but in his nightmares every night, he heard the whispers of Yun Qiye caressing his head when he was a child. The Demon Realm collapsed and the Immortal Sect was encircled and suppressed. Yun Qiye cut off half of his life with a broken sword, just to exchange Lu Tianshuang for a breath of clarity. The deer held the frost and stepped on the blood to reach the sky, crushing the Nine Heavens Divine Seal: "You refine me into the Tao, and I will use the Tao as bait to lure you, a fool, into a demon." The two stood side by side on the top of the abyss, one covered in blood, the other covered in demon patterns, but no one dared to call them "human" or "demon" - they were the ones that the heaven did not dare to accept or punish, and they were suffering from symbiosis.
