Board Thread:Questions and Answers/@comment-26184585-20150309015458/@comment-11444045-20150404131212

I simply think his hollow mask appearing was due to the mask forming during the 3 day training to get his powers back, while his soul reaper powers and hollow powered are fused together that doesn't necessarily mean he can form his mask now. However that may or may not be the greatest theory but right now he has yet to go bankai either with his real zanpakuto and we all know he has one but whether it's actually tensa zangetsu or something else remains to be seen.