You shouldn't have to extract part two yourself, extracting part one
should do two as well. Although if that bit went wrong I don't think the game would work at all, if don't mind Anonfile there is a copy in just one part
here.
I intentionally made the game folder name as simple as possible with my original download. If you downloaded the version with the really long name, and extracted it to a folder with that long name take the YOTOGIMICHI 3.1.2 folder out. It could be that long folder name in the file address stopping the translation.
It's not entirely the developers fault especially with the translation, this is the plug-in we added.