Xiao Shuang had a difficult childhood and he has learned to fend for himself at a young age, developing a dual personality in the process. He is the catalyst that moves the entire story forward in a depiction about the motivations, hopes and dreams of young men and women in the city.

Ao You, the ninth son of the Dragon King, is a gifted and intelligent man who has been admonished not to reveal his true form at will since he was a child. Later, when he accidentally showed his true form while drunk at the Queen Mother's banquet, he was found by the Heavenly Court to be a dragon, and was thrown down to the Heavenly Court with his immortal bones shaved off.