Based on what she's talking about, the points of connections between their worlds seem limited. There's nothing really to be gained by pretending to be her acquaintance, as far as he can tell, and it's just going to make things more difficult in the long run. "Pretty sure you haven't seen me in forever - I don't think I'm the same Wriothesley from your world." He motions to the mirrors all around them, a few of them reflecting Wriothesleys from various worlds, including ones in uniforms that might be more similar to what Furina is used to. "I think I'm from a different reflection. Sorry, I wasn't sure what to make of the situation at first, so I didn't want to say."