Hi anon! Thank you! ouo
He ripped off his original mask in ch. 136 though! (Strangely, the black patch does resemble the eyepatch in the original mask.) That said, I wouldn’t rule out the possibility if the black patch was a remainder from his kakuja mask.
Hmm, but I think there isn’t a need to hide the right eye to prevent the CCG from finding out that Kaneki is a one-eyed ghoul. From what I’ve seen so far in ch. 138, Kaneki hasn’t activated his kakugan yet, so I don’t think it would have been found out that he is one-eyed. In any case, Arima has seen Kaneki without a mask… his identity could be easily found out now, I guess.
I could be wrong of course!
PS. I think you meant Ishida-sensei, not Isayama-sensei. :)
Thanks so much for contributing your thoughts!! :3