Only once the people below could no longer hear them did Shinobu Kocho ask, "Why did you say that in front of him?"
"He'll definitely be on his guard," Tetsu no Sosuke said.
"...Huh?" Shinobu Kocho was dumbfounded. Yes, he'll definitely be on his guard, so why say it? That didn't explain anything at all!
"Do you think that, while he's on his guard, he might also be a little worried?" Tetsu no Sosuke asked with a smile. "Keep a closer eye on his expression from now on."
"If you don't explain yourself, I'll..." Shinobu Kocho fumed, but she had no idea how to threaten him. Finally, she gritted her teeth. "If you don't explain yourself, I'll write to my sister and tell her you're bullying me!"
"..."
Tetsu no Sosuke sighed helplessly. "Demons were all once human, and each has a different personality. But once they truly focus on something they care about, they change accordingly. Take Upper Moon Six, for example. If I tell him our goal is to get information out of him, he'll consciously avoid certain questions we ask. And when we try to use pain to uncover his secrets, he'll pay attention to everything we do to him and carefully examine every change in his body. Doesn't that work in your favor? You might even be able to tell what he's thinking just by watching his eyes, and get more detailed information that way."
"How could it be more detailed? It would only be vaguer," Shinobu Kocho said. "Besides, if he's on his guard like that, he won't tell us even if something really does change in his body."
"But some things simply can't be hidden. You'll have to watch closely." Tetsu no Sosuke smiled. "Besides, this fellow seems pretty simple-minded. I could more or