The group left once Noah felt able to move again. They flew for a while until they reached a distant region where they could settle and heal properly.
Don's injuries weren't severe, and King Elbas had his methods to restore his body made of golden flames. Instead, Noah needed time to recover, so he secluded himself in a cave where he deployed the Dark Womb spell.
The sword-like coffin interacted with the dark matter in the black hole to harmonize the healing process and bring his condition to its peak. Noah recovered quickly, and he used that time to review his battle against Charles.
'The "embodiment of power" is as powerful as the tome suggests,' Noah thought during his rest, 'But I can improve the unstable substance. I need to turn it into something more reliable and less dangerous to use.'