The first born of the Heaevenly Emperor Taiwei. He was born from an unknown concubine. The night deity, he wishes to live his life in peace. He has a younger brother, the fire deity Xufeng, who is the son of the Heavenly Empress, but the empress hates Runyu, since she believes he will snatch the throne from Xufeng sooner or later. Either way, Runyu and Xufeng have a good brotherhood. Runyu was set on an arranged married when he was little, his future is not so easy