Mikage (who is called
"Francoise" by her husband
Tenryo) used to be a follower of
the Ryujoji School and wanted to
defeat Jubei II. However, unlike
many of her comrades, she not
only wanted to defeat Jubei's
successor but also wanted to use
the eye-patch for herself. She
thought she could harness the
power of the eye-patch for her
own purposes. After being
defeated by Jubei II, her life
changed completely. After the
defeat, she became the means
of communication between the
defeated people and Jiyu.
She is still a ninja, but
instead of fighting for the
Ryujoji's, she fights for the
defense of Jiyu.
 
She also looks strikingly
similar to Jiyu's mother. This
causes some confusion for Sai,
who misses his wife and hasn't
felt love in a long time. So he
falls with Mikage, trying to
experience this vicarious love.
Unfortunately, Mikage is married
to Tenryo and this creates an
uncomfortable situation.