I saw a post on one of my friends' Tumblr blogs with two short passages of Japanese in it. I took the opportunity presented to me to test out the Japanese 1Core voices I had installed.
I tested with all three of them (they probably use the same logic, so I didn't necessarily have to do that I suppose), and was soundly disappointed by the results. Espeak identified the strings of characters as Japanese-Letters. When I read the same text with the 1Core voices meant to /read/ Japanese, I got /silence./ It read the Latin characters in the distorted way I had expected, although NVDA switched to Microsoft David when reading actual English words and sentences. The Japanese passages, however, were simply treated like lines of unidentifyable/unassigned characters, with complete silence. I could not even scroll over them character by character with the left and right arrows and get a response from them!
For reference, this is the post I discovered this problem with:
https://kintatsujo.tumblr.com/post/690881533161144321
I do not need or want a translation, I just want this behaviour verified by someone else.