Did you try the system fonts? There are three fonts intended for Japanese and Chinese use. These are much more extensive than Georgia which is used for the Publisher Font when none is specified in the book.
This is also a case where the font needed should be embedded. The book creator should not be relying on the device or app to have a font available for those characters. For the other apps, they probably worked because of the way the fonts are handled when there is missing glyphs, or it was a fluke that the font you had was one that was suitable. But, I am pretty sure they are either using the OS fonts, or are falling back to other fonts installed on that OS for missing glyphs.
And having typed the comment about font handling reminds me that the kepub reader does have some fallback to the above fonts. That may mean the glyphs are missing from them as well, but, it should be tested.
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