Y’know, I think Tatara was a little pissy about Kaneki’s kakugan being on the wrong side because:
The “King” and Eto have their kakugan on their right side. Kaneki has his on his left.
I wonder what’s up with that? Does the kakugan’s side really matter when it comes to the king? 😛
(Also, I’m still wondering why Aogiri wanted Rize in the first place? I don’t think it would’ve been for experiments since Kanou was using her for that very reason? And ????? Kanou IS working with Aogiri, right? If that’s the case then why were they searching for Rize if she already was with Kanou?)
I think that Kanou wanted to create a half-ghoul for his own purposes, and he knew that she had very good healing…
And I’m not sure, but maybe the location of the Kakugan depends on something important? Or maybe she wants the OEK of now to look similar to the OEK of the past?