Board Thread:General Discussion/@comment-10587310-20130620070434/@comment-1978840-20140118000804

I like the true Bankai more than the former. The fact that even a Bankai can hold back its power and nature wasn't entirely surprising, considering Yumichika's Ruri'Iro Kujaku could have its abilities suppressed with a different name called out. If it wasn't clear, already: The reforging of a Zanpakutou, after broken while in Bankai, is done by claiming a new Asauchi. It doesn't change form because it is shape from the spiritual powers imbued by the owner. Ichigo has a new Shikai (and Bankai) because he no longer has his power suppressed and accepts both sources of his power as his own. Renji still has Zabimaru's Shikai, but Souou Zabimaru was obtained when Renji became strong enough to be fully acknowledged as a warrior by Zabimaru.