The aura Ray had seen didn't last for long, but he was sure of it. The feeling that this man by Alexander the emperor's side was the same as both Bliss and Van. For Bliss, the aura she gave off was holy and strong and this was because she was a Divine being.
When Ray had sensed the same thing in Van, he had asked Bliss about it. According to her it was due to there being a so-called God inside him. It was a strange thing to refer to themselves as but there was no other way she could explain it. They were great beings that could last forever and if they did die, they would simply be reborn.