User blog comment:Omega natsu2/Chapter 369: The Place Prayers Reach, Predictions./@comment-7418318-20140129131414/@comment-7418318-20140129153106

She complained that she felt lonely without Senbon Sakura, so I guess that even though he didn't participate in the fight, due to severe injury, Byakuya still got his Bankai back through Urahara's method.