A free app for Android, by ShinyApp Studio.

Sebastian Anime Black Theme Bu is a wonderful application for Android users that will help them create a stylish phone screen. If you are an anime fan, you will love the beautiful HD wallpapers that are included in this app!

All you have to do is download the app and install it. You will see a list of the available themes and you can choose one of them.

After you have installed the application, you will see a new icon on your phone’s home screen. You will have to tap it and you will see that you will be able to activate the screen lock.