User blog comment:Xilinoc/Ch. 681 - THE END TWO WORLD/@comment-9282993-20160707154012/@comment-24769684-20160707181506

This is what I think happened: Yhwach manipulated every possible future so that Ichigo's Bankai would be broken in each one. Orihime's power seems to be rejecting one future in favor of another, but since all the futures were the same, she couldn't do anything. But when Tsukishima inserted himself into the past, he created a new future that Yhwach couldn't tamper with.