Kreacher met him in the entrance hall on the evening of the sixth.
This was not how Kreacher had been in the original timeline, and he was aware every time he looked at him of the specific distance between what the elf was and what he had been. Three years of careful management — not the management of someone handling a problem, but the management of someone who had understood that the problem was not Kreacher but what had been done to Kreacher, which was a different thing entirely and required a different response. He had started with the locket. He had continued with the library.
'Nine books this week,' Kreacher said. He had a satchel over one shoulder — the library satchel, the one Ron had had made for the purpose, deep enough to hold a week's reading without cramping the spines. 'Master Regulus's collection on the fourth shelf has three more volumes relevant to the ward theory work. Kreacher has marked them.'
'Good,' Ron said. 'Thank you.'
Kreacher received this with the specific quality he had now when thanks were offered — not the flinching of the first year, not the suspicion of the second, but a kind of settled acceptance, the quality of someone who had been given something consistently enough that receiving it had stopped being surprising. He disappeared with the particular efficiency of long-practiced elf magic.
The Black library had been, by the start of fifth year, three-quarters read. He had been working through it since second year in the specific methodical way that a project requiring patience rather than speed required — not rushing, not skipping, reading everything and copying what mattered into the dark-covered notebooks that now occupied two shelves in the dormitory above his bed. The methodology had been Hermione's suggestion and his execution and the result was a secondary library, organized in the way his mind organized things, which was not the way books organized themselves but was considerably more useful for the specific purposes he had.
This week's reading contained the curse.
He found it on the Tuesday evening, in a volume on long-term magical damage — a Black family text, annotated in three different hands across what appeared to be two centuries, the kind of book that had been used rather than preserved. It was in the third chapter, cross-referenced to a counter-curse in chapter seven, and the cross-reference was in the oldest handwriting, the one that appeared in only two other places in the entire volume, which suggested someone who had found the connection and noted it carefully and then, apparently, never acted on it.
He read the curse description once.
He read the counter-curse description twice.
He sat with the book in his lap in the dormitory for forty seconds, which was long enough for the specific quality of what he was holding to fully arrive.
Then he was moving.
He ran the entire way to the common room.
Not the way he ran during training — controlled, paced, the running of someone covering distance efficiently. The other kind. The kind that happened when the body decided before the mind finished deciding, when something had arrived that was too large for the ordinary speed of things.
He came through the portrait hole at a pace that made the fourth-years by the fire look up with the expression of people who had never seen him move like that and were revising their assumptions accordingly. Neville was at the table in the corner, his Herbology text open, and a cup of tea going cold beside it. He looked up. Something in Ron's face made him stand before Ron had said a word.
'What—'
Ron set the book on the table, open to chapter seven. He put his finger on the counter-curse. 'Read that,' he said. 'Read the cross-reference in chapter three after. Tell me what you think it means.'
Neville read. His reading had the quality it always had for things that mattered — fully present, moving carefully through each line, not rushing. Ron stood and watched him and did not say anything because there was nothing useful to say while Neville was reading and the room was doing the thing rooms did when something significant was happening in them.
Neville reached the end of the counter-curse description. He looked up. His expression had the specific quality of someone who had understood and was in the process of understanding what understanding meant.
'My parents,' he said.
'Yes,' Ron said.
Neville looked at the book again. His hand had come to rest on the page — not gripping it, just resting, the specific involuntary gesture of someone who needed to maintain physical contact with the thing that had just changed.
'This would work on them,' he said. It was not a question.
'I believe so,' Ron said. 'It's not guaranteed — the damage is long-term and the counter-curse has caveats I'm not qualified to assess clinically. You'd need a Healer. You'd need your grandmother. But the mechanism is correct. The symptoms match exactly.'
Neville looked at him. His eyes had the quality they had when something was too large for the usual architecture of his face and was finding its own way through.
'We need to go to McGonagall,' Ron said. 'Now. Tonight.'
They went.
McGonagall was in her office, which she usually was on Tuesday evenings — the specific late-term quality of a Head of House with her house's paperwork. She looked at the two of them in her doorway with the expression she wore when students arrived after hours with something that was not an emergency but was not nothing.
Then she looked at the book.
She read the counter-curse with the same quality Neville had read it — properly, fully, the reading of someone who was not skimming. She looked at the cross-reference. She looked at Neville.
Her expression had the quality it had in very rare moments — the moments when something had arrived that she had not expected and that she found, despite herself, extraordinary. She was quiet for a moment. Then she stood.
'Mr Longbottom,' she said, with the specific careful precision of someone choosing their words because they understood the weight of them. 'You may use my floo.'
Neville used the floo.
Ron stayed. There was nothing he could do in St Mungo's that the Healers and Neville's grandmother could not do better, and he understood this clearly enough to sit in the chair McGonagall pointed him to and wait. McGonagall made tea, which was what McGonagall did when the situation required something to do with the hands. She put a cup in front of him. She sat at her desk. Neither of them spoke for a long time.
'Where did you find it?' she said eventually.
'The Black library,' he said.
She absorbed this. 'Of course,' she said, which was not said with irony.
They sat in the office while the fire burned low and the castle settled into its late-night quiet, and Ron drank the tea and thought about a book in a library that had been sitting on a shelf for two centuries with a cross-reference in the oldest handwriting and no one had ever followed it.
Small things, properly placed.
The news reached Hogwarts on Friday.
Dumbledore came to find him at the library table — the east window, the dark-covered notebook, the ward theory work — and sat across from him with the quality he had been developing across four years of these conversations, which was the quality of someone who had a great deal to say and had learned, specifically with Ron, that saying the essential thing clearly was better than saying it at length.
'The counter-curse worked,' Dumbledore said.
Ron put his quill down.
'Both of them,' Dumbledore said. 'Alice first, then Frank. The process took three days and required two senior Healers working in coordination, which is the clinical caveat your source text mentioned. There were — complications, in the first twelve hours. Not dangerous ones. The kind that come from long-term damage finding its way toward resolution.' He paused. 'They are, as of this morning, coherent. Recognisant. Themselves.'
Ron looked at the window. Outside, January was doing what Scottish January did — low grey sky, the grounds bare, the loch dark and still. He sat with the specific quality of having received what he had been hoping since he read the chapter heading and cross-referenced the counter-curse — not triumphant, not relieved in the showy sense, but the particular settled feeling of something that had been wrong for a very long time becoming right.
'Neville,' he said.
'Is with his parents,' Dumbledore said. 'And his grandmother, who asked me to tell you — ' he paused, and something in his expression had the quality of careful transmission — 'that what you have done is not something she has the words for, and that she will find them when she sees you.'
Ron looked at his hands.
'She will come,' Dumbledore said. 'With Frank and Alice. When Frank and Alice are ready. I imagine that will be soon.'
They came on the following Wednesday.
He was in the entrance hall between classes when they arrived — not by prior arrangement on his part, simply by the specific timing of things that seemed to arrange themselves correctly when the occasion required it. Augusta Longbottom came through the doors with the quality of someone who had worn a particular expression for fourteen years and had, in the past week, been relieved of it, and the relief had not made her softer but had made her more present, the specific quality of someone who had stopped bracing against something and was now fully in the room.
Frank Longbottom was taller than Ron had expected. He had Neville's build — the same solidity, the same way of carrying himself — and he moved through the entrance hall with the slightly careful quality of someone relearning the confidence that had been in him before, which was coming back in the way things came back that had always been there: not fast, but steadily. Alice walked beside him with her hand through his arm, and she looked at the castle with the expression of someone seeing a place they had known very well through a new version of their own eyes.
Neville was with them.
He saw Ron and stopped.
The quality of the moment was not one that required a description. He had been fifteen in this body for four and a half years and had arrived, by now, at a reasonable understanding of when something did not need language. He met Neville's eyes and held them for a moment and nodded once, which was sufficient.
Augusta Longbottom was not a woman who communicated in half-measures. She crossed the entrance hall with the decisive quality of someone who had made a decision and was implementing it, and she took Ron's hand in both of hers and looked at him with the expression she had warned him she was still finding words for.
'You found it in a book,' she said.
'Yes,' he said.
'A book no one else had read.'
'The cross-reference had been there for two centuries,' he said. 'Someone made it. They just never followed it up.'
She looked at him for a long moment. Then she said, with the specific weight of someone who did not say things lightly: 'You followed it up.'
She held his hand for a moment longer. Then she released it.
Frank Longbottom, behind her, looked at Ron with the expression of a man in the early stages of reclaiming himself and finding, in the reclaiming, that there were things to be grateful for that he had not yet finished cataloguing. 'Neville has told us about you,' he said. His voice had the quality of something recently recovered — not weak, but careful, each word placed with the attention of someone who had not always had access to them. 'Some of it.' A pause. 'I think there's more he hasn't told us.'
'There's more,' Ron agreed.
Frank looked at him. Something passed between them that was not the gratitude — the gratitude was present and acknowledged and settled — but something else, the quality of one person recognizing another across the specific distance of very different experiences and finding the recognition accurate.
'Thank you,' Frank said.
It was, Ron thought, the most sufficient thing anyone had said to him in a long time.