Notes:

Myanimelist info:
Synopsis
There was a time when there were ninja serving the powerful, hired for intelligence missions, destruction, or assassination. While the times have changed, the need for ninja has not vanished. In a particular school, there are girls who are secretly in training to become ninja. Ninjas-in-training, Asuka, Katsuragi, Hibari, Ikaruga, and Yagyuu each have a secret technique scroll that they protect at all times. This features their tumultuous school life as they pursue the path of the ninja!

(Source: AniDB)

Yagyuu (柳生)
Age: 15
Birthday: December 23rd
Blood Type: O
Height: 158 cm
BWH: 85-60-83

A first year, she is a ninja prodigy. She cares very much for Hibari who she supports the most. She wears an eye patch over her right eye and carries an umbrella (armed with various weapons) at all times. Her summoning animal is the giant squid.