Mihael's powers grew more and more. And so did Rose's.
To a point where they could in theory move into the null.
But there were some problems. Namely, Mihael had no real of way of navigating within the null. He did know his way in some parts but the null was too big, way too big.
He also had to deal with the earth and the current situation they were in. Apparently the Arachans were dealing with the god with the full knowledge of what the former god was doing. Balabael was also technically a Arachan. Though he did still have most of his godly powers and with more experimentation he got even stronger powers than when he was a god. He became the leader of the Arachans and prophesized how Mihael would eventually come here. He was always waiting. He didn't seem to know that Mihael would come as a god however.
"He felt stronger than typical supreme gods," Mihael said. "Hard to believe, he was just a reincarnation," he shrugged.