User blog comment:CoolJazzman/Stern Ritter count/@comment-6800355-20130627174053/@comment-11051098-20130627202810

Cang Du came up against Hitsugaya and stole his Bankai, and used it against him when Yamamoto released his Bankai, witnessing Daiguren Hyôrinmaru's ice wings evaporating from the heat.

I think Rukia was attacked by someone else, someone we haven't seen yet. Or someone we saw in the latest chapter, but can't point out because we didn't see him until now.