What are Worldlines? - A Kingdom Hearts Discussion

Hi all, Azure here! Today we have a video discussing an incredibly fresh and new concept to the Kingdom Hearts universe, and that is the idea of a "Worldline." We have yet to discover what exactly these are and what they mean for the series. Are they timelines of the many worlds? Are they the realm in which the worlds are in? Or are they something else entirely, let's dive right into that question right here.