I'll just give you the information about her. Her name is Takiko.
She appeared in the book about 200 years previous to the current timeline
in the book (With Seiryuu and Suzaku at war, yadda ya).
Because of the time difference between the book and the outside world,
it had only been about 80 years. Her father was a researcher and
bookwriter. He did lots of religeous studies, on of which focused
on 'Four Gods Earth and Sky' book and the beliefs around it. His
daughter, Takiko, who had been engulfed into the book, didn't quite come
out the same person. In an attempt to solve things, he killed his
daughter, and then himself. He asked his close friend, the father
of Susano (Byakko no Miko), to take the book and be sure it would never
be opened again. That promise was never fullfilled. Takiko
is buried with her father in Morioka. In the first OVA series you
get to hear a little more on that subject. When Tamahome is sucked
back into the Shi Jin Ten Chi Sho world, it is Genbu No Miko's voice that
calls to him. She explained that she was being erased, her gravestone
disappearing. The first OVA series really doesn't have anything to do with
the Fushigi Yuugi manga universe, and such. Watase didn't have any
input on the first OVA series other thanshe found it neat what other people
could come up with in using her creations.
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