Kei Yamaji (Princess Ninja Emiha)
Name: Kei Yamaji
Designation: Princess Ninja Emiha
Tetsuzan's daughter, a 16-years-old high school freshman. She often teases her adoptive brother Toha, leaving most of the housework and chores to him, but cares deeply about him. When she dresses as Emiha to assist Jiraiya, she wears a white ninja armor similar to Jiraiya's. Her special technique, the Cherry Blossoms Rain Ninja Art, allows her to put enemies to sleep with a rain of white cherry blossoms. Her other technique, the Face Copying Ninja Art, allows her to create face masks of other people to disguise herself.