I'm not sure which software you're referring to when you say 'light literature, light novels, light country, and empty library.' However, according to what I know, there are currently some Japanese light novel reading software such as "light novel reader" and "light kingdom", but they may no longer provide new updates or services. If you want to read Japanese light novels, I suggest you try online reading platforms such as "Light novels" or "Sky library". These platforms provide many different types of Japanese light novels. In addition, if you want to avoid the trap of the national light, you can try to find some more gentle Japanese light novels, which may suit your taste better.