User blog comment:Silver-Haired Seireitou/Sei-san's Classroom: Chapter 495 - Bleeding Guitar Blues/@comment-1149803-20120607025652

Maybe Byakuya didn't change. -shrug- It's not HIM doing the fighting, but his more hot-headed Lieutenant. Most likely, instead of just scolding him outright for being hot-blooded, he was simply encouraging Renji's aggression, as it would be more suited to him. Different people work under different conditions, after all. o: