A free app for Android, by kalmandoo02.
The application is very easy to use, you just have to choose your favorite picture from the gallery and tap the "Plus" button. If you want to set the picture as wallpaper, tap the "Set as wallpaper" button. The image will be placed on your screen as wallpaper.
You can also use the image for any other purpose, like the background of a website or your social media profile.
If you want to find out more about the series, you can find the official website for the series and also a lot of fan-made websites with very high-quality images.
