Okay the full game on Steam is lowkey borked atm because either Steam can't extract the package in correct language encoding even with system locale set to Japanese or someone dun goofed and submitted it in a corrupted state to begin with. Either way various visual asset files have names to the tune of "âuâìü[â`âhâbâg.png" - a classic symptom of non-Unicode characters having been extracted in the wrong encoding - and duly don't show up ingame since that obviously isn't what the code calls for, leading to character sprites randomly appearing faceless and/or eyeless. Not gamebreaking (so far anyway) but decidedly detracts from the experience and just a bad form in general.
Now if this was some rando unofficial TL of a JP RPGMaker game I got off the Internet I could probably deal with the issue simply by changing WinRAR settings but it isn't and the problem needs to be fixed on the publisher side.