Hence this version does not work in TeX Live 2012 (or earlier).
1. If you are using TeX Live 2013 or later, you can install LuaTeX-ja via tlmgr.
Hence this version does not work in TeX Live 2012 (or earlier).
1. If you are using TeX Live 2013 or later, you can install LuaTeX-ja via tlmgr.