"As expected of my twin, you can see through anything."
What kind of line is that? It's on the, "as you know," level of dialogue.
So she did figure it out.
It's probably because I have a fuckton of twins in my family but I've always wondered how they don't realize because of the voice.
He's only run into Hikari in a noisy arcade. Let the man cook.
I
am a twin, but even though I'm horrible at recognising people, I don't do worse with twins. But most of the time you see them together, so noticing the differences is easier.
Although in this case I'd be liable to not even recognise her at all at the arcade, since it's a place I wouldn't expect to see her. But if it's someone I'm interested in, it's a different issue.