[Bon is definitely frowning now. Weren't you listening to him, Yukio?]

Of course you don't. The Rin we know is your brother. But that Rin is a girl, and the Yukio from her world is a girl too. And there's probably more people who got switched like that too, we haven't exactly gotten around to discussing it yet.

And as for no remembering the Calamity, well, time gets distorted out on the Skyway. That's about the best answer we have for that.