User blog comment:B214/High School DxD EX/@comment-24098614-20160208110058/@comment-27232228-20160208205639

Even if this spin-off does not really tie on with the main story we can see at least how far the heroes go in later time.

You do remember that Ise have his new draconic body from Great Red, right? Apparently, his Dragonification has scaled up to the point that he can shapeshift his new body to a large dragon's form at will, without needing Rias or Akeno draining his energy to return back to normal human shape. Of course, this is basically what he had worked for three decades.