Yes, here's the first few lines of that code:
"stringSettings": {
"settingsVersion": "1.13",
"language": "en",
"defaultFontName": "sans-serif",
"decorativeFontName": "Lora",
I'll try it out when I can. The JAP language package was a wild guess that may or may not have anything to do with anything. It shouldn't as the font selection is based on the name.