Lol, manga logic. I just like to think that her makeup is out of this world
Its like in fanfictions when the girl takes out her messy bun and becomes a different looking person entirely ╮(￣▽￣)╭
One could ask the same of Clark Kent... the guy literally does the exact same thing. At least Bruce Wayne wears a mask (#batman4ever)
Might be her overall feel? Like her clothes, and attitude change. He did originally mistake her for her "real self" initially, but took her at her word that she was another person, and her personality as so different he didn't question it. People can look really different with the right wardrobe, hairstyle, and a personality change.
Look up Tom Cruise in Tropic Thunder. All it really was, was a wardrobe and personality change, but you'd have to study the face a bit. And even then you probably wouldn't guess he was Tom Cruise, especially if he introduced himself as a different name.
what the actual shoujo fuck ... does she gets fucking plastic surgery every time she removes her glasses .. she literally looks the same ... and the guy who is her classmate & works with her gets his eye blind ..along with hearing issues ...every time he sees her at cafe ...