User blog comment:Xilinoc/Ch. 592 - Marching Out the ZOMBIES 3/@comment-11446176-20140806073523/@comment-4207271-20140807071941

Hell, Getsuge Tensho might not even be a Zanpakuto ability, but rather a Shiba Clan inherent technique, with Jujiisho being just a doubled-up version (Just my thoughts). I'm still holding out hope that Engetsu is a Water Type, using Hydrogen Gas for the ignition, tying Isshin and Kaien together more solidly, with Ichigo having a Water Type too, which would help explain Yhwangetsu's hate of the rain even further.