Byakuya's page is out of context, but the main part is:
Tsukishima: "You couldn't possible forget?
You've been cut by be just now.
Well then... Come, Byakuya"
Rukia: "What... is that?"
Rukia: "I can't cut it. I'm not quite sure what kind of animal is that...But there's no way I can cut it!!"