"I know you're not going to like it, but we may have to play bait to get them away."

Even if he can't see the frown, Souji can certainly sense the implication of it. Her emotions are often even, neutral, a more exaggerated version of his own calmness, so anything that tips one way or another is easy enough to detect. Especially when he feels the same, now. They're perched and far too close for him to be able to attack from a distance with any of his Personae without hurting the humans they're attached to.

And trying to stab or slash each one off with the uchigatana he has wouldn't work, or be particularly effective. Or safe.