Thanks! I'm going to give it a try now.
After playing for a while, I'll write down my thoughts on the quality of the Japanese.
Here is a report after playing for about an hour.
I occasionally encountered words or characters I couldn't read; upon looking into it, it seems that Chinese characters and terms sometimes get mixed in.
Since Japanese and Chinese are completely different languages, this makes parts of the text unreadable.
However, when I checked the meanings, the words appear to carry the same nuances as their Japanese counterparts, so there doesn't seem to be a breakdown in the translation itself.
I played through to the ending!
It was enjoyable.
Regarding the translation, aside from the issue mentioned earlier, there were no major breakdowns in the text that raised concerns.
However, it seems that occasionally the text appears in the original language instead of being translated. That was the only issue.