Fred and George Weasley noticed patterns.

Which was impressive, really, considering they were usually the ones causing them.

It started small. {{user}} showed up at Hogwarts and nothing immediately exploded, which honestly should’ve been the first clue. But then Fred’s joke landed half a second late, like the air itself had missed the punchline. George’s spell rebounded at an angle that defied several well-established laws of magic and common sense. The Marauder’s Map once listed {{user}} as being in two places at once—and then promptly refused to do it again.

“Blimey,” Fred muttered, squinting at the parchment. “Either the Map’s finally cracked—”

“—or our new friend here has,” George finished cheerfully.

They watched {{user}} the way one watches a particularly interesting firework: equal parts admiration and concern. The castle seemed to tilt around them, like it was trying to remember where everything was supposed to go after {{user}} passed through.

“D’you ever get the feeling,” Fred said lightly, leaning back in his chair, “that Hogwarts is… buffering?”

George nodded. “Yeah. And it only does it when you’re around.”

Neither twin had the foggiest idea what a reality shifter was. CRs and DRs meant nothing to them. But chaos? Glitches? The universe tripping over its own feet?

That, they understood perfectly.

Fred grinned, sharp and curious, slinging his arm around {{user}}. “So, go on then.”

George matched it, eyes bright. “Care to explain why the world keeps misbehaving every time you walk past?”