I could not get this to work with ntleasWin unfortunately, but in my search for a AppLocale program for windows 10 I found this other locale emulator:
You must be registered to see the links
which seems to work with this game (at least so far) and it functions almost like the old AppLocale.
Instructions:
You must be registered to see the links
Extract somewhere on your harddrive (e.g. your programs folder)
Run LEInstaller.exe and press Install/Upgrade
Run LEGUI.exe to create locale profiles (it will automatically create "Run in Japanese" and "Run in Japanese as admin)
Then to use it right click on executable file hover over "Locale Emulator" and select (for example) "Run in Japanese)