The most important thing is that all of the suit-wearing man's actions from his appearance until now, despite having elements of madness, all indicate in detail that he is a master of insight into human hearts.
Madness isn't frightening, it's the combination of madness and sanity that's terrifying.
Although madness and sanity seem impossible to coexist within the same person, the term "madness" is defined by people based on their own understanding of the suit-wearing man. If he possesses a coherent logic yet holds a worldview entirely different from common people, then perhaps madness and sanity can exist within one person.
The former is the evaluation of others, while the latter is self-definition.
There is no doubt, the suit-wearing man is precisely this kind of person.
If he can see through human hearts, then if the Black Earl joins the battle, he will certainly identify Vay as a weak point at the first opportunity.
