The Head Doctor seemed either unaffected or unimpressed by Kurogane's threats toward Fai, simply standing in the doorway with a neutral expression as if waiting for the patients to sort themselves out before he involved himself directly. In fact, it was only when Tsubaki began to speak that the Head Doctor glanced away from empty space, a strangely sad smile spreading across his features as she asked about what was truly at stake.

"The truth is always worth hearing, my dear," he said in nearly a murmur before he raised his head and spoke louder: "And I greatly appreciate you showing interest in circumstances that... well. They're more pertinent to all of you than you probably would like to know."

After a moment of pause, he nodded his head and turned to walk into the hall, gesturing at the patients to follow.

"I will be glad to explain those circumstances, but I'm afraid my words would be wasted on Mr. Kuro in particular unless he is given a more... personal incentive. But please – come. I can assure you that this is a display, not a pact. You will not be bound to my service by any means unless you specifically agree to it."

The hallway's surfaces all looked to be a solid black metal, and the Head Doctor's polished shoes clicked eerily in the small space as he made his way to the end of it. The hallway itself wasn't very large – probably only a bit longer than the office attached to it, but wide enough to comfortably fit the four of them. As he waited for them to slowly file in, he said: "What I can tell you is that if you think my methods are inhumane..." he gave a short chuckle, raising a brow sardonically, "you should see the opposition."