/usr/share/djvu/osi/ is in libdjvulibre-text 3.5.24-9.
This file is owned by root:root, with mode 0o755.
..
/usr/share/djvu/osi/cs/
/usr/share/djvu/osi/cs/messages.xml
/usr/share/djvu/osi/de/
/usr/share/djvu/osi/de/libdjvu++.xml
/usr/share/djvu/osi/de/messages.xml
/usr/share/djvu/osi/en/
/usr/share/djvu/osi/en/djvutools-reference.xml
/usr/share/djvu/osi/en/libdjvu++.xml
/usr/share/djvu/osi/en/messages.xml
/usr/share/djvu/osi/en/unixgui-shared.xml
/usr/share/djvu/osi/en/unixgui-viewer.xml
/usr/share/djvu/osi/fr/
/usr/share/djvu/osi/fr/libdjvu++.xml
/usr/share/djvu/osi/fr/messages.xml
/usr/share/djvu/osi/ja/
/usr/share/djvu/osi/ja/libdjvu++.xml
/usr/share/djvu/osi/ja/messages.xml
/usr/share/djvu/osi/languages.xml
/usr/share/djvu/osi/zh/
/usr/share/djvu/osi/zh/libdjvu++.xml
/usr/share/djvu/osi/zh/messages.xml