In TG, the roles of Kaneki’s symbolic parents were taken by Rize and Yamori.
The human Kaneki “died” and he was reborn from Rize’s kagune (her body).
After being tortured by Yamori, he abandons his old way of thinking (“rather than a person who hurts others, become the person getting hurt”) and develops Yamori’s mentality (his mind). He starts believing that only the strong have the right to survive and that all of the liabilities in this world are due to the inadequacies of the person involved.
In :re, the roles of Kaneki’s symbolic parents are taken by Eto and Arima.
Kaneki died at the end of TG and that’s why Eto did everything she could in order for him to return his memories. By doing that, she gave birth to him once again. He’s her child, her egg. She even gives him her kakuja (her body) as a gift.
Arima’s the person who took the role of the father Kaneki never had, the person he looked up to and the person who he wanted to be like (his mind).
This is the reason why Arima dying like this in front of Kaneki really is the worst-case scenario. As usual, Ishida came up with the most tragic way to end this battle.
I don’t even want to imagine how this will affect Kaneki, a suicidal person that has just found his will to live.
Relatable FE Quote or Something 