[He's smiling. Sonic had to reciprocate. If Shadow didn't want to know then that was his decision. It was his own future too. Others might have seen it as an advantage, knowing someone else's future, but Sonic didn't think of it that way.]

Oh, just noticin' that now, are you? Heh, you know, you're pretty interesting yourself. Didn't think I'd meet anyone like you.

[Whatever this world might have been, where it was, how it came to be, Shadow was here and alive. If Sonic had also remained here as long as Shadow had, there would always be the opportunity to challenge each other. He tried not to think about what would happen at home, as unavoidable or inevitable as that was.]

Yeah, like always, of course! I know you will too.