Fushigi Yûgi: Byakko Senki, Vol. 1 by Yuu Watase is the first volume of this story arch, but is part of a larger story. I have not read the previous parts but was still able to catch on to the story. I think those that know the previous parts will definitely get more out of the read than newcomers, but everyone should be able to enjoy the read.
The year is 1923. Suzuno Ohsugi’s father, Takao, warns her to stay away from The Universe of the Four Gods, telling her it’s a book that only men can touch. He knows that in order to enact its story, the book needs one last heroine: the Priestess of Byakko! After the Great Kanto Earthquake strikes, Suzuno and Takao are trapped in their burning home. Takao has only one chance to save his young daughter, and that is to send her into The Universe of the Four Gods!
Fushigi Yûgi: Byakko Senki is a manga style graphic novel that does a good job of laying the groundwork for a grand finale, without making this part of the story feel any less important that what happened earilier in the Fushigi Yûgi world. Suzo's background and trauma over what happens in the first part of this book were really well done, although I struggled a bit with the more 'current' aspects of her life. As a whole I liked the story, there was a good blend of character building, world building, action, and emotion. The artwork matched the story well and kept it moving forward. I wish I had the broader knowledge that would have come from reading the earlier Fushigi Yûgi material, only because I have a feeling that the world building that has gone into the story is even better than this small sliver let me grasp. Of course, my only other issue was that just as big things were starting to come to a head the volume ended, which I should have expected with this adventure/fantasy style of series. It just made me sad to see that I had reached the end, and left me craving the next issue and the time to go back and read the previous story lines.