User blog:Aita666/Kanekis and unknown character

On a discussion board for :re chapter 131 an anonymous poster posted an image of two forms of Kaneki's younger self (one with black hair and one with white) and a brown-haired child in between them whose face wasn't shown. I have looked throughout both the original series and :re and I can't find which chapter this image comes from. Therefore, I was wondering if someone could help me with this. Here is the link: http://i.4cdn.org/a/1498854424479s.jpg