As soon as he saw the situation before him, Duncan, who had been ready to boldly step forward and declare "the traitor is none other than myself," immediately faded back into the shadows without a trace, instead watching the assembly's situation with the detached attitude of someone watching a play.
It turned out there was more than one traitor in the crowd—that girl in the black dress had given him a sense of dissonance from the beginning. Originally, Duncan thought it was merely because her youthful and quiet demeanor didn't fit in with the heretical assembly, which had led to his impression, but it turned out to be something else entirely.
He noticed that the meeting's leader mentioned two terms: Abyssal Hound, Obliteration Sect.