I noticed now from your screenshot that your game folder name is not correct. That might cause some issues.
It should be Togainu no Chi/咎狗の血/ instead of those strange markings you have.
Did you install the game while your locale was set to Japanese? No idea if it matters in the end, just trying to grasp straws here.
Also if your screenshot was from the Fuwanovel version, I think your script.pak file should have the same date as I have, meaning 1.1.2015. Did you replace the file properly? Or did you download the game earlier than that?