Well, '16 never ending story' is a really unclear term. It could potentially be a story that is divided into 16 segments and is called 'never ending' because it has an open - ended plot. For example, it could be a serial story where new parts can always be added to it. Another possibility is that 16 is just a random number attached to a story concept that emphasizes the idea of the story having no true end, like a fable or a myth that can be retold and expanded upon indefinitely.
I'm not sure specifically what '16 never ending story' refers to. It could be a very specific piece of art, a personal project, or something unique within a certain group. Maybe it's a story that has 16 parts and is never - ending in the sense that it can keep evolving or being added to.