The Sinking Moon in the Silent Night

Shen Yue is a woman with a powerful nose and talented skill at blending scents. But she has been abused and abandoned as a "ghost" of the land of scents. Saved by Ye Jing, the prince of the kingdom and the young boy Shen Yue once met long ago as children, they embark on a mission to gather the Hundred Scents and return Yue's lost memories.

Source: KManga