Board Thread:General Discussion/@comment-20311922-20130916143753/@comment-11051098-20130925154727

Arrogant as Byakuya appear at times, I doubt he would kill his own grandfather just to obtain the positions of Kuchiki Clan Head and 6th Division Captain, even if it was required.

As a teenager in the TBTP mini-arc, he seemed to be too attached to Ginrei to do such a thing. He showed in the fight against Zommari that he's willing to injure his own body if necessary, but I don't think he would kill a family member.

I think Ginrei is either retired or dead. I mostly hope he's retired, and still alive, so there's a chance Kubo could consider involving him in the battle. But I guess that's unlikely.