Hostages, then? If he can take people from different dimensions, he might be able to communicate with those in our home universes...

[His parents are likely still alive. They weren't in the galaxy sector where the battle took place. Ralathor would still seek him if Angus was in danger, that's how he was.

He notices that he has been quiet for too long and stands up, focusing on the papers once more.]

So we are to keep our notes in our heads until we find a safe storage place?