Board Thread:General Discussion/@comment-12301089-20131211070550/@comment-2186265-20140305003445

Stefan (Shikai - "Rust & Shatter") wrote: Sternritter M wrote: Byakuya was wrong, yes, but he didn't have much information on Ichigo at the time, so he didn't know.

Well, to be wrong about something is basically to put ones ignorance into words, something which Byakuya did alot in the SS arc. I believe Ichigo managed to crack Byakuya's usually solid composure, and his pride, along with his stubborn side, led to Byakuya underestimating Ichigo.

As Ichigo's was very strange for a Bankai he was confused but he did admit it was powerful after fighting it for a while. Also Byakuya shortly after that immediately unleashed Senkei to defeat Ichigo.