Well, how should I open a kepub file? Calibre doesn't do it, it just converts.
Anyway, kobo itself downloads a kobo epub format, but when I download the same book from kobo store, I get a DRM-free epub.
The book is:
Le pił belle fiabe popolari italiane,
Newton & Compton Editore.
(
http://***kobo.com/it/it/ebook/le-pi...olari-italiane )
I don't see any of the strings you wrote in the epub version, obviously. I can't check the "kobo epub" version inside.
I have attached two screen shots from my Clara.