W.L.O. Sekai Renai Kikou

I haven't run into that issue yet. The only issue I have found is that if you've installed other Japanese VNs without switching the locale and they have worked, they don't when trying to playing them with the japanese locale. An example I can give is Saya no Uta, which won't play properly. My guess as to why is it doesn't is because the file types weren't displayed in japanese when they installed, instead they had the odd jibberish letters that occur when using non japanese settings. However, reinstalling them under japanese locale fixes the problem. Other than having to reinstall 2 games, I haven't found the need to switch my settings from Japanese.