Feng Ni Tian Xia

A brief description of the “Feng Ni Tian Xia” manga:

She is the first princess, the only legitimate daughter known to the whole country for her uselessness… But behind this mask hides the most dangerous 21st century killer… He is the absolute king of the night. In troubled times, they meet by chance. Like a zither and flute of an ensemble, life and death go hand in hand, both in heaven and on earth… the history of fantasy…