Board Thread:General Discussion/@comment-4317207-20130313091731/@comment-7313057-20130320223834

The hollow at the end of chapter 530 could be a vasto lorde or imperfect arrancar. It's impossible for Masaki to survive an encounter with that hollow, and then killed by a weak hollow like grand fisher. I believe Masaki sealed away the hollow inside her body and probably sealed away her own powers by accident; since they were mention of her goofing off on her quincy training. Also, Ryūken ask Isshin if he recovered his shinigami powers and he replies he think so. Isshin probably wasn't strong enough so he used Final Getsuga Tenshō and still couldn't defeat it but injuried the hollow enough for Masaki to seal it inside herself. Ichigo is their first child so he probably absorbed the sealed away hollow.