It spun.
He watched it go, a blur of color and text and possibility, slowing gradually the way wheels do, the way chance always seems to perform its most important work — with agonizing, theatrical deceleration. The sections became legible one by one as it crawled toward stillness. He caught fragments. The One Piece World. Middle Earth. A Court of—
It stopped.
He read the section it had landed on twice.
Then he laughed.
It was not a particularly dignified laugh. It was the laugh of a man who had, against all reasonable probability, found himself exactly where some part of him had always half-expected to end up, which was somehow funnier than any alternative would have been.
"Harry Potter," he said.
"Indeed," the being confirmed.
"Of course it is." He shook his head, still smiling despite himself. "Alright. And who would I be going in as? Please tell me it's not Voldemort. I have opinions about Voldemort, and I don't think any of them would survive actually being him."
"You would not be an original character introduced into the story," the being said. "You would be taking over an existing life."
"Whose?"
"Ronald Weasley."
He stopped.
The smile didn't disappear so much as it rearranged itself into something more complicated — not unhappy, exactly, but recalibrating rapidly. Ronald Weasley. He ran the mental file quickly, comprehensively, the way only someone who had read those books more times than he could accurately count would be able to. Youngest Weasley brother. Best friend. Loyal, brave in the specific way that required acknowledging fear first. Talented in ways the narrative had never quite gotten around to showcasing. Frequently overshadowed. Occasionally his own worst enemy.
There were worse people to be.
"When?" he asked.
"Seconds after Gilderoy Lockhart's memory charm," the being said. "In this particular universe, the charm struck both Lockhart and Ronald simultaneously."
He took that in. The Chamber of Secrets. The cave-in. Harry already moving forward toward something that would nearly kill him, because that was what Harry did. "Alright," he said slowly. "Do I get anything? Going in? Or is it strictly a sink-or-swim arrangement?"
"You will receive three gifts," the being said, and held up a hand before he could respond. "Nothing that would make you immediately and absurdly overpowered the moment you arrive. The point is participation, not substitution."
"Fair enough. What are they?"
The being seemed almost to settle, the way something does when it's about to say something it has thought through carefully. "The first is correction. Ronald Weasley's body has spent twelve years accumulating the small damages of inattention — poor posture, inadequate nutrition, the particular kind of physical neglect that comes from a large family with more love than resources. These will be corrected to what they should be. A baseline. Any improvement beyond that will be yours to earn."
He nodded. That was generous without being unreasonable.
"The second is mastery over your own mind. Full Occlumency — not something that would need to be learned, but something that would simply be present, as natural as breathing. And memory — eidetic retention of both your own life and Ronald's. Everything he experienced, everything you experienced, accessible and clear."
He was quiet for a moment. That was — yes, that was significant. He knew enough about the story to understand what Occlumency represented, what it meant in a world where thoughts could be read, memories could be extracted, and minds could be invaded by something wearing a man's face.
"And the third?"
"Your soul will fuse with Ronald's completely," the being said. "Nothing of his personality or his habits or his patterns will linger to work against your judgment. What you will find, however, is that the fusion improves the capacity for magic. The soul is not incidental to a witch or wizard's power. A whole, settled soul casts more effectively than one that is uncertain of itself."
He turned this over. Three gifts, each of them meaningful, none of them the kind of thing that would let him simply walk into every conflict and win by default. He appreciated the design of that. He would still have to do the work.
"Before you go," the being said, "is there anything you wish to know?"
He thought about that carefully. There was an enormous amount he could ask. He could spend what felt like hours asking questions. But he was about to step into a situation that required immediate action, and most of what he needed to know was already in his head from years of reading. What he needed was the specific, the things the books hadn't told him cleanly.
"Two questions," he said.
"Ask."
"How close is this to Canon? I'm working from a specific knowledge base, and if the deviations are significant, I'd rather know now than find out when something doesn't go the way I'm expecting."
The being considered this. "Mostly as you know it," it said. "There is one notable divergence from approximately the fourth year onward. Ronald Weasley was originally intended to suffer a partial memory loss from this encounter — not severe, but enough to create a gap in the friendship dynamic. When that didn't occur as intended, Neville Longbottom stepped more naturally into certain roles from the fourth year. The friendships shifted slightly. The core story remained intact."
He filed that away. Neville. He had always thought Neville deserved more of the story. "And the second question." He paused, because this one felt more important than it might have sounded. "Dumbledore. In some versions of this story — in a lot of the fandom, actually — he's written as manipulative. Coldly strategic. Moving people like chess pieces for the greater good without much regard for whether the pieces had feelings about it. Is that the Dumbledore I'm dealing with?"
The being made a sound that was, unmistakably, a laugh. It was a warm sound, unexpectedly so, like a fire in a very large and otherwise quiet room.
"No," it said, when it had finished. "The Dumbledore of this world is not a villain. He is something more difficult to write, in many ways — a genuinely good man who has been given far too much to carry for far too long. One hundred and twenty years old. Headmaster of the most important school in wizarding Britain. Chief Warlock of the Wizengamot. Supreme Mugwump of the International Confederation of Wizards. Three positions of profound responsibility, each of which could occupy an entire capable life. He is not manipulating the people around him. He is, more often than not, simply exhausted. Doing his best with what he has and occasionally failing to see clearly because he has not slept properly in thirty years."
He absorbed this. It was, he thought, a considerably more human Dumbledore than a lot of people wrote, and considerably more interesting for it. A man crushed under the weight of good intentions and impossible responsibilities was a much more compelling tragedy than a cold mastermind.
"Alright," he said. He looked at the wheel, still sitting in the void, and then back at the being. "Thank you. For the explanation. For the gifts. For — all of this, I suppose."
The being inclined its head. "Do not thank me yet," it said, but not unkindly. "You are about to find yourself in a cave with a pile of rubble between you and a fourteen-foot basilisk."
"Brilliant," he said. "Love that for me."
The white began to close in — or perhaps he began to move outward from it, the sensation was difficult to distinguish — and the last thing he heard before sound and weight and cold stone and the smell of damp earth rushed back into existence was the being's voice, entirely calm:
"Try not to die immediately."
"No promises," he said, and opened his eyes.