What is "wrong direction". The Western text should be displayed rotated clockwise 90 degrees. See the example in the 3rd image in the first post of this thread. Is this not working?
See:
https://en.wikipedia.org/wiki/Horizo...tional_Chinese
I could add an option to have Western characters appear in the same orientation as Chinese/Japanese if desired, but it would apply to the entire book. I think it's easy to do.