Noah wouldn't go back on his word. That wasn't a matter of honor or similar things that had no meaning in his mind. He wanted to help King Elbas, and he wished to perform his first exploration of the sky with him.
Truth be told, King Elbas was the perfect companion for such an insane mission. He was ready for every situation, and his current unstable state wouldn't change that. Noah couldn't even imagine his friend getting desperate in front of death.
Still, the issue remained. Noah would probably fail to complete his preparations before his friend reached a critical state and forced him to start the mission.
King Elbas didn't necessarily have to enter the sky, but he didn't need to explain how the insides of the white layer would have more value. Nothing could compare to a chunk that had never touched the outside world. Its level of purity would be on a superior league.
