@reallyreece honestly i think that the first time it was because she was wearing lots of makeup (which can b really transformative) and then switching back and forth… at this point i think he assumes they’re twins, or sisters at the very least, so there needn’t be a difference at all.
another part of it is probably how out-of-character it’d seem to him, from what he knows of her so far. even their personality, cause she’s more comfortable and in-her-skin as Futaba; she has more confidence. any similarities he sees he’d probably attribute to siblings even to the point that it seems weird just cause… cognitive dissonance of separation between the two siitjffj (this is longer than i meant to make it omg)
but yeah! i mean if this happened to me, i’d probably assume they were twins, even if things seemed a little off, cause the idea of them / her deceiving me just for kicks(?) would seem impossible. even if it is niggling on my mind, i’d probably shut it up cause it just wouldn’t seem realistic. remember, he doesn’t know why she would want a job and she’s busy enough as it is and yet still has such good grades… yeah