Or, this guy is trying to hide in audacity. He says that is his weakness, she doesn't believe the "bullshit," and never reveals since she thinks it is a joke.
The guys face screams Japanese without any disguise or anything. Let's see:
Oriental face
Black hair
Soldier's posture
"Otherworldly" cuisine
Literal JAPANESE NAME
I was confused why the hell no one in that faction pointed that. They blind???