Having someone to ponder over the clue with was a help, and Castiel continued to examine the drawing as he considered Kobayashi's words. A stomach flu... But he knew for a fact that more than his stomach had been affected. Still, maybe it was something that originated there, but spread throughout the whole body? Humans could be very susceptible to certain viruses, and some of those viruses were very deadly and very clever.

Barnaby spoke up, clearly only half-conscious, and yet he was obviously following along well enough to add to the conversation. Of course, the X-Ray machine. It was used to see inside a human's body, so it would be best if they could get a look for themselves.

Almost as if in response to that, a girl ran forward, apparently worried on Barnaby's behalf. Castiel didn't know her, so he remained quiet for a moment, listening to her request. He certainly wouldn't mind some help, seeing how he had no idea how to use one of these machines. Apparently, neither did Kobayashi.

"I wouldn't mind," he added after a moment, "provided that someone knows what they're doing." This was not his area of expertise, so he had no choice but to rely on someone else in this case. Luckily, an offer had been made, which took away the humiliation of having to outright ask someone for help.