Board Thread:General Discussion/@comment-30310866-20170326091607/@comment-74.141.238.110-20180331102616

A FANDOM user I like your theory, but didn't Shikorae already possess all four kagune types as Rio, which is why Eto/Aogiri wanted him in the first place? This would mean that it was before Kanou would even have been able to get to him. Presumably Rio had them since birth since his brother always tried to protect him even from other ghouls since he was special/different. I think Rio is a natural chimera, though that only goes against your theory -for Rio- and not in general