Board Thread:Questions and Answers/@comment-24783875-20150210052922/@comment-99.103.213.108-20150211004210

Around the release of Chronophantasma Mori was interviewed regarding the future of BlazBlue and the final game. He said the next game will be the last, though the franchise will not end completely, simply it will be the end of Ragna the Bloodedge's story. As Mori said, BlazBlue is Ragna's story. He is the main character.

It would seem being a guest keeps me from pasting links and such so I can't provide source. However if you just google "BlazBlue Chrono Phantasma Mori Interview" you should be able to find it like I did.