Maruki's reigns down to his expression to a neutral look, not sure to what extent was any of Drake's anger just there for the sake of funneling out his own frustration at him then. It could very well be possible- didn't mean he needed to attend to it.

"That could be more pyschological then physical," he says- turning the topic completely away from Drake because he wasn't interested in. "Your somatosensory cortex might still be registering the chest as 'damaged' or even the proximity of the attack being so close to the heart could have left a mismatch between old brain signals and your current body."

"Usually cognitive behavioural therapy goes further into reframing that pain in the right direction so that your mind catches up with the facts," he hums along. "I could suggest some aspects of encouraging mindfulness if you are interested in it."