If you want to be unique, and you are an artist or a design enthusiast, or simply want to try something new and fun, you should definitely check out this app. It's a keyboard theme that is inspired by the popular manga and anime series "Red & Black Metal" and the music group of the same name.

The app itself is pretty easy to use, and you will be able to customize the keyboard and change the background, fonts, and even the icons. All you need to do is download this app, set it as your keyboard, and you will be ready to type in no time.