Talk:Kishou Arima/@comment-42.60.223.185-20150209063758/@comment-10733658-20150209073345

I imagine that will be one of the major plot points for :Re. (Akin to "Who is the One-Eyed Owl?")

He could have seen something in Kaneki that caught his interest. (Pity, potential as a tool, ect) He could have been ordered to do so.

Either way, it seems that Kaneki was considered a valuable find. They not only got a sample of Kanou's research, but used him to develop the Quinx. Plus, his amnesia means they have a valuable if somewhat unstable weapon to use against Aogiri.