/usr/share/man/man1/sjislatex.1.gz is in latex-cjk-japanese 4.8.4+git20170127-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/cjklatex.1.gz
/usr/share/man/man1/cjklatex.1.gz