/usr/share/doc/uim-mozc/README.Debian is in uim-mozc 2.20.2673.102+dfsg-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/uim-mozc/../mozc-server/README.Debian
/usr/share/doc/uim-mozc/../mozc-server/README.Debian