Asta is still alive in the manga. The story keeps evolving with him at the center of the action. There have been many difficult situations, but he manages to overcome them without dying.
Asta and Yuno are childhood friends in a magical world. They both strive to become powerful wizards and fulfill their dreams. Their paths are filled with challenges and adventures.
One appropriate theme could be Asta's training journey. It can detail how he overcomes difficulties in his training, like pushing his physical limits and mastering new magic techniques.
Well, creating an asta index for light novels can be a bit of a process. Begin with gathering all your light novels together. You might want to look for some software or tools that can help you manage the index - making process. For instance, there are some database management tools that can be used for this purpose. When adding entries to the index, consider including not only the basic information like title and author, but also things like the number of volumes in the series, and whether it has been translated into other languages. This will give a more complete picture of each light novel in the index.