Quite a few things coming from this chapter. Obviously we have Eto outing herself as a Ghoul to Tokyo, but more importantly we have more depictions of the one-eyed king via her novel. What we know now then;
>He/she has one eye
>They may be associated with the Washu clan
>It is not the leader of V(assuming Kaiko is the leader)
Moving on to Mutsuki. He lost his arms and legs. They're cut off from the knee cap and lower, and I'm guessing the hands are simply just the hands because the arms are still tied behind his back. Torso is a fucking creep and if they go with this whole rape scene that everyone keeps planning out, well, I'm all for character development but that's rather lack luster.
Rize was a member of V at some point. Big shocker, given the progression of this story. Her insane regeneration had to have come from somewhere.
Last but not least, the biggest theory of them all; Arima. So, as we heard from Eto, certain RC cells can walk through the RC detectors that the CCG have installed. Why is that? Simply because members of CCG are indeed ghouls and V is the top dog running them. The most likely suspects are Arima and Furuta. Reason being for Arima is a semi-weak theory right now, but when he was fighting Kaneki and stabbed him through the brain everyone assumed that was IXA. Looking back it and knowing what we know now, it's quite possible that it was actually his kagune.
Picture of what I'm talking about;
Overall another push-the-story forward chapter. The main thing I'm interested in is learning more about Eto and V, but who knows where he'll go right now.
No it's the amount of characters being introduced to how many are being kept up with/alive with the current amount of chapters.
They're not really introducing a lot of new characters. The only new ones being introduced are the Qs, and that's a given because of the last few chapters in the Tsukiyama arc. More recently, we have the reappearance of our V member.
*Went and fact checked myself; Only new characters introduced as of recently is the Qs squad. How is four characters a lot?