User blog comment:Xilinoc/Ch. 685 - THE PERFECT END/@comment-493809-20160804210053

Next chapter we'll probably see the "Perfect Ending" explode in darkness as Ichigo continues to cut through Yhwach, whose Almighty returns just in time to let him read this chapter (#685). Either he'll destroy that future so that the group doesn't get such a happy ending, or else he'll resign himself to finally being beaten for real.

Or it could be that it isn't a troll at all, and it really is God-Ichigo showing up for a visit as the new lynchpin of reality.