You can try EpubSTAR, an EPUB2/3 Ebook generator. EpubSTAR support Nook, Sony, kobo and iOS's devices. It can support Multi languages:
•Interface regional languages switch (English, traditional Chinese, Chinese Simplified).
•Multi-language text mixed processing.
•Multi-language style mixed processing.
https://www.mobileread.com/forums/sho...d.php?t=191270
http://www.by-smart.com/epubstar/epubstar.html