Kuro Kishi

Top adviser and effective ruler of the Erste Empire. Despite being the person primarily responsible for developing Erste from a small country into a military superpower in just a matter of years, the Black Knight doesn't appear to be obsessed with power or authority. Instead, she acts according to her own motives apart from those of the Empire. The Black Knight knows Lyria's secret and frequently appears with the mysterious girl Orchis in tow, always leaving you with a trial to overcome before vanishing from sight.

(Source: Official site)