Prior to Chapter 1 of Tokyo Ghoul:re and shorty after Kaneki’s recovery after his defeat by Arima I imagine a scenario playing out between Akira and Kaneki (now named Sasaki) in which Akira educates Sasaki about Ghouls. It’s short, but I could see this having had happened.
Akira: “Despite the fact that they live solely to slaughter and devour humans for their own sadistic pleasures, Ghouls share the same outer appearance as us humans.”
Sasaki: “‘Share the same outer appearance’..?”
Akira: “Yes. Unfortunately, this allows them to sneak freely and blend into human society. There are some cases of Ghouls going so far as devouring the same food us humans share in order to not raise any suspicion. They’ll do anything to avoid capture by the CCG.”
Sasaki: “…Erm, Akira-san?”
Akira: “What is it?”
Sasaki: “If it’s true that we share the same physical features with Ghouls, could there be any other similarities between us?”
Akira: “What are you getting at?”
Sasaki: “Well, based on the books I have read thanks to Arima-san, I have learned that some humans also share the same sadistic urge to slaughter their own kind, and even the acts of cannibalism exist. Are we no different from them? You stated that Ghouls are willing to go so far to blend into human society and avoid suspicion with investigators by devouring human food in public. But…what if that was not the only purpose..?”
Sasaki: “…What if…some Ghouls also share the same other moralities that we, as humans have? Akira-san…could it be possible that some Ghouls actually want to disregard violence and acquire a form of equality between them and us humans?”
Akira: “…!?” She walks towards Sasaki and connects a punch to his gut area.
Sasaki: “Gah..!! “ He gasps for air in response, his eyes widened.
Akira: “…Sasaki. You are a soon-to-be Ghoul Investigator. You must not any thoughts of empathy towards Ghouls. Ghouls have no morals, no self-control within the public. They seek only to cause harm to human civilians. They are murderers. Are you aware of the amount of loved ones that are taken away due to the selfish acts of Ghouls? We, as Ghoul Investigators, ensure the safety of those civilians and take it upon ourselves to handle those Ghouls. I do not want anymore of these feelings to cross your mind. Understood?”
Sasaki: He solemnly glances down on the ground, his hand placed over his stomach. “…Yes…Sorry…Understood.”