Talk:Ken Kaneki/@comment-191.185.182.189-20151227202237/@comment-25047329-20151227204408

I think the latter, what the person said from Reddit, is likely closer to the truth actually. This is a question that gets brought up every now and then, but an important thing to remember is that "Kaneki Ken" had been a buzz name around the CCG for quite some time already.

Kaneki was the patient involved in the organ transplant scandal, one of Kanou's patients, mysteriously disappeared without a trace, was eventually found to be one of the experiments for the Kakuhou Transplant Surgery, Hide admitted to the CCG to being close friends with Kaneki and joined them to find him, was suspected of being a One-Eyed Ghoul, and Shinohara suspected that Centipede was Kaneki.

Given the strange and mysterious circumstances revolving around Kaneki, the CCG came to know of him and would have had a pervasive interest. Especially with the possibility of him being a One-Eyed Ghoul. The CCG had tried to make hybrids in the past but failed. Kaneki was a known human until they learned that he was involved in Kanou's experiments and was the first known success.

TL;DR No, there's no known meeting between Arima and Kaneki prior to V14 and Arima likely learned of him through the CCG.