Sanada Kaori is a character from Bakumatsu Rouman, or better known as The Last Blade. She made her debut in the second game, disguising as her late brother Kojiroh.

Most of Kojiroh's appearances are actually of Kaori's, but there are depictions of the true Kojiroh, most prominently in the Playstation port of Bakumatsu Rouman.
sanada kaori