He sees the way he moves; hears the way he talks. When Okiya Subaru comes to Poirot, Rei’s hands are hitching. His nails want to plant themselves into the mask and tear down the fake flesh. His knuckles want to caress the skin under, feel how easy it would be to bruise it, ruining his stupid – perfect - face. His fingers want to reveal who Okiya Subaru truly is. Because Rei knows, for he himself has so many masks, that Shuichi is in front of him.