Arima's arm got cut? i didn't know that, but I can see them doing some regeinerating things with ghoul parts. Only problem is that the body parts could have a negative effect on them, just as Rize's organs had a negative effect on Kaneki.
I effing hope it's not Arima! I'm in love with him! He doesn't seem like the badass that would be a jerk either.
Then they'd have to kill all the CCG who got the ghoul parts! That would suck!
I think CCG will start or have started experimenting on how to grow back their cut arms, I mean Arimas`s arm just got cut so did with Juuzou Leg. Do you think its possible?