Board Thread:Questions and Answers/@comment-27802108-20160219071545/@comment-6969093-20160608120542

I personally think that when Kaneki's kakuja will show it's full potential at that point of evolution where it is (I think it's about 75%, as I see 0 protection for the head and no really noticable improvements in offense (Eto and Yoshimura, for instance, could cut with their Ukaku while using their kakuja)) he'll totally kill Arima (if he has the nerve to do it - he WAS like a father to him for 2 years after all).

If that won't make him an SSS rank, then I don't know what will.