"It's... it's not really a realm but I guess in a way it is" he said, trying to think of how to explain it. He had never needed to before. "It's like stepping out of time and space, stepping into a place beyond Limbo, beyond anything. My realm, if it could be called that, isn't anything but it's a place I can go to. I can shift my reality around me, usually to help someone transition through their death but..." he paused, shaking his head. "I'll just show you" he said, before knocking back the last of his drink.
The bar around faded into a monochrome haze. Black and white ran into one another like coloured oil meeting on water. In moments, the bar faded away and Azrael had conjured up an image of some street in Ankh Morpork. They stood together in an alleyway, people moving past them as if they weren't there. It was night time, the star lit sky above them and nearby, lanterns lit up the moody street.
"£very where in between is my realm and nowhere is my home" he said, gesturing around himself. "I was never awarded my own realm so mine became an absence of time and space. My existence, my solitude is the place where time stands still"
The alley faded away until they stood in a blank, empty place. There was nothing. No light, no colour, no objects, no discernible floor nor ceiling. There was just nothing. And in a blink of an eye, they were back in the bar again.
Azrael picked up the bottle and refilled his glass.