Castiel tried to see if he could feel Nakama's power working, but he wasn't sure he could, though there was a distinct feeling of energy that had to be the result of it. So Castiel turned his focus toward the patient, stepping up beside one of the doctors, reaching a hand out to set on the patient and pulling.

He aimed for one injury first, one of the ribs, trying to draw it off and only it. He clenched his jaw as the rib--along with two others, he wasn't as precise as he'd intended--broke while at the same time healing on the subject, but overall he was faintly pleased. That was a lot better than last time, when he'd absorbed the whole thing on accident, and he ignored the pain and moved to try again.

This time he got just a single break, as he was aiming for, and immediately tried for the next. This one, though, was the break that had damaged the patient's lung, and he had pulled both wounds before he could figure out the delicacy of separating them. Immediately he let go of the patient and staggered backward a few steps into a wall, hand pressed against his side, trying not to wheeze up any blood before Merlin could heal him. He had a feeling it would upset Nakama.

He was far more annoyed about messing up the draining than he was about being seriously injured now, though.