Despite her appearance of a petite young high school girl, Jiyuu does have some skills, one of these is the "Yagyuu Shinkageryuu Mutodori", a sword catching skill used to prevent harm on her opponent.
She is very well rounded which grabs the attention of the boys in her school and local area.
Her nickname is Juubei, a reference to the famous Japanese swordsman Yagyuu Juubei.
As Yagyuu Juubei, Jiyuu is described as a calculating young swordswoman with a completely different persona, although some of her true self is still shown.
Whenever she defeats an enemy, she releases him/her from their hatred on Yagyuu Juubei.
She requests Sai quit being a ghostwriter and write her a love story under his own name.
She meets and befriends Freesia Yagyuu, a transfer student from Russia, and later encounters Koinosuke's child, Ayunosuke.At first, she refuses to wear the Eyepatch, but after being attacked by the Siberian Yagyuu and Freesia, she picks up her sword once again.This is a list of major characters in the anime series Jubei-chan: The Ninja Girl which is created by Akitaro Daichi.The series comprise two television series: The Secret of the Lovely Eyepatch and The Counter Attack of Siberian Yagyuu, both series take place in Hontsuru City.is a 14–15-year-old junior high school girl attending a new school at the start of The Secret of the Lovely Eyepatch.She has a bright personality and a close relationship with her father.