Talk:Ken Kaneki/@comment-58.71.29.62-20160411183055/@comment-27361104-20160414045107

We can guess that from the time Arima caught Kaneki up until Kaneki defeated Eto that he had not been eating ghouls. So, being able to produce those large kagune tentacles that impaled Eto means he could always do it (from the time he started cannibalising). The only real change or improvement over that period of time was in his ability to mold it into hands.

Point - as we already know, kaneki has immense potential.