And now as he stood in his room, he could sense very mana particles in the entire outer circle and if it wasn't because he didn't want his presence to be discover he also would had expanded it to the inner circle.
Ainz stood there attentively paying attention to any changes he could feel, after closing the system panel he soon paid attention to his body
The immediate thing he noticed was the pressure his body was radiating even without trying to do anything and just simply standing there, every inch of his muscles radiated a suffocating pressure that if he didn't intentionally hide it, anyone would think he was a high-rank magical beast.