World Of Darkness
He wasn't breathing, or maybe it was better to say that he didn't need to breathe, although it was something that could easily be overlooked in hindsight and given the situation, he hadn't breathed since he opened his eyes.
By forcibly performing the action of breathing, he did not have any sensation of change or anything that could be noticed.
He didn't feel the soft air filling his lungs as he inhaled, nor the soothing sensation when he sighed.
Looking around him, he noticed that it was a truly beautiful place, although due to its size it seemed lonely, he realized that apart from Keil, there was no one else.