Ying.
She was the most special female lead in the game, unique in many ways. First, she had no name. Second, there was no starting point for her questline. Third, she had no visual representation. Fourth, her origins were vague. And fifth, her strength was unfathomable.
Setting aside the Love Saint ending, even in the normal storyline, one could only reach the Dark Border and encounter this female lead by following Mo Xilan's path and triggering the Immortal Sorrow subplot.
Although there were many such peculiarities, this female lead was also exceptionally unique.
Her appearance and actual features were never seen. Even in the Love Saint ending's CG, only a vague, shadow-like outline of her was visible, yet she still left a deep impression on Wang Mu.
