In the end, they agreed to let him stay along with the other norms with him. But they did that because they also wanted to take a gamble to see whether his dumb wish will ever come true or now. Guess everyone wanted to see whether they can solve everything even without fighting at all.
No one wants to sacrifice anyone for the sake of others. Whether that's the humans or r the norms. Losing a comrade is as hurtful to them also. Ernest knew that very well, that's why to lessen the number of dying people he thought this treaty will work for a while.
Meanwhile, Hope and others were showing that boy all around the base. He went to the lab where he was stuck there for a while. He was looking at the place where Hope was kept all those years. He thought of it as something mysterious to him.
