[Atsushi swallows at the sudden change in Akutagawa's behavior, but it was probably justified, given that Fukuchi literally killed him.
They already tried to beat him together, so the chances of Akutagawa doing it alone is .. slim, to say the least.
But he can relate to that wish at least.

He nods slowly, directing his gaze back to the cub, who is slowly falling asleep in his lap.]

I wished for everything regarding The Book to be undone. That all these bad things and deaths .. that they never happened.