Board Thread:Speculation House/@comment-27394360-20151214040010/@comment-65.78.122.207-20160111054218

I like the theory that Neo's semblance is essentially light refraction constructs. Also, I'm under the impression that what the audience saw (and what any recording device would see) was the illusion, and that the reality was the act of self-defense. Neo puts up a construct around Yang and Mercury, as another suggested here, which plays the maiming scene. Inside, Mercury goes for one more attack and Yang counters. Emerald's only role was to prevent the medics from seeing the metal leg.

They're already thinking that Coco and Yang suffered some sort of battle stress resulting in their "hallucinations". Having Yang NOT be affected by Emerald would further sell that conclusion, and would discredit any testimony Coco and Team CFVY might bring. Can't detect anything wrong with Yang if there's nothng to detect, and they can't find a common element between Coco and Yang if there was never one to begin with.