BlazBlue story takes Kingdom Hearts to another level. It's not just the main story either, it's the extra stuff that puts Nomura to shame.
The story consists of time loop plot holes in Calamity Trigger, Continuum Shift, Chronophantasma CentralFiction.
Then you have Phase Shift novels, Remix Heart manga, Wheel of Fortune drama cd, the XBlaze visual novels, and extra character information and reveals on BlazBlue Radio/BlueRaji, and other cryptic shit they decide to reveal.
That's if you want to invest time into this multimedia franchise of course. You realize how popular and well BlazBlue is doing when you see all these tie ins with Lord of Vermillion and other merchandise and media.