Raze had spent a short time in Pagna in the grand scheme of things, but based on what he had seen so far, he wondered if there was a way back to Alterian. From what Himmy had reported to him, no one had found a way.
In fact, Raze thought this might really be the case since even the Dark Faction Founder had stayed, but based on what he knew of the person, it was more so that he had fallen in love with the current world of Pagna, that he didn't wish to leave and head back to Alterian.
Finding a way back was part of Raze's later goal. He imagined that if anyone knew a way back it would be the leader of Alter, or some type of item that would allow them to.
After all, a portal had an entrance and an exit, so if people were warping into the world of Pagna there had to be a way back.
The reason why Raze wasn't particularly looking for a way just yet was because of his strength. The other world was one that had the Grand Magus, those that he had cursed to death.