If you have collected all 7 books of the Black Bullet then it is quite obvious that you are a big fan of this series. There is even a possibility that you always reread these books when you have nothing to do or if you want something that can help you relax in the evening. It will not be a surprise that you would like to have a theme that is related to this Anime series at all and you do not need to look further too because this is the wallpaper for you. You can see the various characters of the series available on your computer's wallpaper. The light colors can still make your wallpaper appear bright against your screen.