Subaru's leaning more neutral, and that won't change after war crimes month! I'm thinking it could be fun to shove this guy her way, particularly as he's older than he looks and highly empathetic. Eventually, he might really see her. Maybe.

When he harmonizes he'd sure be capable of knowing it's her regardless of her present form (if nothing else there's her wombmate...) which might be fun to play with later? If no one else is around, just greets her by name.