Shina Yamamoto

An extremely capable kunoichi whose real face and age is unknown. At Ninjutsu Academy she'll appear as either a beautiful young woman who's very strict with her students or as a kinder, more lenient old woman. Whether either of these forms is her real one is a mystery. Aside from being a master of disguise, her younger form's other specialty is horse riding. Not just her own current students but also many other young kunoichi such as Kitaishi Teruyo and Yamabuki look up to her a lot.