Chapter Dark Figure
The mysterious stranger is a man in the Dark corner. The initial appearance is "A mysterious stranger sits behind a table, gesturing you to sit on the chair opposite to him." The description is "Shadows cover the mysterious stranger completely, showing only a dark silhouette."
Understand "dark" and "figure" and "silhouette" and "shadow/shadows" as the mysterious stranger.
Instead of insulting the mysterious stranger:
say "You're too intimidated by him to do that."
Instead of attacking the mysterious stranger:
try insulting the mysterious stranger.