You can try to fix it manually if You want, but I don't know if it works. I am not so expert, it depends on the Kobo data base.
If you use calibre to get the book into your Kobo the simplest way to fix it is the Kobo Utilities plugin created by the late Davidfor. Add the plugin to Your calibre from calibre settings, its usage is intuitive.
It often happens that translators are included among the authors when You buy a ebook. I correct it every time.
This is the first page of the plugin thread.
https://www.mobileread.com/forums/sh...wiki+kobotouch