Please set at least some of your overall system to Japanese. It currently shows signs that the system can't read Japanese.
You can do this by going to:
Control Panel > Regional and Language Settings > Switch the tab to the last tab > Change the Unicode Settings to Japanese.
I would do a screenshot of the panel you're looking for but my system is entirely in Japanese as follows:
View attachment 4665
... I need more MB space at this rate for attachments...
And if that doesn't work out, you need to set almost all your settings in Regional and Language Setting to Japanese. I'm actually already had that game running for a while on my system on just the Unicode changes.