I developed an application that let’s you create a wallpaper showing your current progress on WaniKani. It it very similar to those generators that already exist but it has one important feature that you may appreciate - once you set it up, it can update your wallpaper automatically every time you restart computer. That’s how the result looks for me right now:
Application is written and compiled for Java 1.8 and is working fine on my Windows 10. It may work on earlier versions too but I can’t guarantee it since I don’t have a way to test it. Instructions, source code and application itself are available in GitHub repository [here]. If you have any feedback, let me know. Enjoy!