The Kesier Apes taken captive in the hidden world remained inside Snore for a while before Noah remembered them. He had kept them inside a sack of dark matter for so long that he had grown used to their presence. Moreover, they were always quiet due to the innate pressure that he radiated.
His mind's condition had forced him to cut off most external inputs. Still, he assigned them to Thirty-seven once he noticed them, and he even left a few chunks of the black metal to the ecstatic automaton.
Healing all the cracks in his mind took almost three years. Noah had left them there for months, so the injury had taken roots. His crystalized mental energy had to remain in place for a long time before turning into part of the walls.
Noah didn't push his body after the limits of the fifth rank right away. He cultivated both mind and dantian for a while so that he could prevent any form of stagnation.