He waited patiently and watched Emil's face for a sign of, well, anything. A twitch, a furrowing of the eyebrows or the raising of them; anything that'd signal a possible good or bad reaction. He much preferred the former, especially since he wished to avoid receiving a wound to match that of his previous incarnation's.

"Yes," he said simply. "If you need to stop, press the button again. You should take your time with this."