He left on the twenty-third.
The train south had the particular character of the Hogwarts Express going home in winter — less raucous than September, more settled, the noise of it lower and warmer and threaded through with the particular relief of people who had been working hard and were now definitively not working. Hermione had fallen asleep somewhere near Birmingham with her book open on her chest and Crookshanks arranged across her feet with the proprietary satisfaction of a cat who had been waiting for precisely this configuration since September. Harry was quiet in the good way, the way he was quiet when something had been carrying him and had been set down.
Ron took photographs.
Hermione asleep with the book. Harry at the window watching the Midlands go grey and featureless in the December afternoon. Both of them together when the train went through a tunnel and the window went dark and what was left was the carriage light, warm and specific, the two of them in it looking like what they were — people he had chosen and who had chosen him, in a year that had asked something of all of them and had been met.
He put the camera away and looked at the winter England moving past the window and thought about the Christmas feast happening in four days in a castle he would not be in.
He thought about forty-seven suits of armour.
He thought about the five lords a-leaping and whether the suit on the third floor had sufficient ceiling clearance for any interpretive movement it might feel inspired to attempt.
He hoped it did. He had not, he realized, thought about the ceiling clearance.
He made a note in his pocket notebook: next time, ceiling clearance.
This was useful. He kept it.
They reached King's Cross at half past four. His mother was on the platform — she had come alone, because his father was picking up the twins from wherever the twins had been doing whatever the twins had been doing, and she arrived in the specific way she arrived, which was at the right moment and entirely unsurprised by her own correctness. She looked at the three of them with the expression that was no longer updating its model, that had settled over the autumn into something quieter and more simply like his mother looking at people she loved.
Hermione's parents were there too — the Grangers, composed and warm in the way they had been at the Burrow in August, her mother pulling Hermione into an embrace with the ease of people who knew exactly how to do this. Her father shook Ron's hand and then Harry's with the slightly formal warmth he had for them, and asked after the term with the genuine interest of someone who had been receiving twelve-page letters about Ministry examination requirements all autumn and was therefore relatively well-informed.
Harry went with Sirius.
Sirius was not on the platform — he was outside, in the car he had apparently acquired with the specific enthusiasm of a man who had been in Azkaban for twelve years and had developed strong opinions about freedom of movement. Harry had received a letter describing the car in terms that suggested Sirius had enjoyed purchasing it significantly. Harry went through the barrier at King's Cross with the quality he had developed over the autumn — less braced, more simply present — and Ron watched him go and felt a quiet satisfaction that had nothing performative in it — the satisfaction of watching someone find a thing they'd needed for a long time.
The Burrow received him the way the Burrow always received him now — with the warmth of something that had been improved and was still itself, the particular smell of his mother's kitchen and the garden in winter and the specific sound of a house that had too many people in it and had been designed, at some level, for exactly that.
His room was the blue room, his books on the shelves he had specified, the Egyptian artwork on the wall cycling through its ten minutes of Nile evening with the patient continuity of something that had been doing this since August and intended to go on doing it indefinitely.
He sat on the edge of his bed and looked at it for a while.
Then he went downstairs and offered to help with dinner, and his mother handed him a knife and a board and a pile of carrots without comment, and he began, and the kitchen filled with the warm noise of a house at Christmas doing its necessary work, and he was in it, and it was good.
The photographs arrived on the twenty-seventh.
By owl but not his owl— Mira was at the Burrow, perched on the back of the garden chair she had claimed as her own in August and which no one had formally agreed to give her but which was now simply hers.
The photographs came by a different owl entirely — small, quick, slightly self-important in the way of a bird that had been given an important delivery and knew it.
He recognized the older elf's planning in the delivery. She had arranged it. Of course she had arranged it.
The package was wrapped in plain cloth, tied with kitchen twine. He opened it at the kitchen table, which at half past nine on the twenty-seventh had his mother on one side of it with tea, his father across from him with the Prophet open to the Ministry section, and Ginny at the end with the Japanese cookbook he had brought home and which she had apparently been working through since the twenty-fourth with the focused attention of someone who had decided a thing was interesting and was doing something about it.
Inside the cloth: twelve photographs.
He looked at the first one and made a sound that was involuntary and that his mother looked up at.
The photograph showed the Great Hall during the Christmas feast — the enchanted ceiling doing its winter thing, the house tables arranged in their traditional configuration, the staff table at the far end with the specific warm chaos of a feast in full progress. This was all as expected.
What was not as expected — what was, he had to concede, even better than he had anticipated — was the suits of armour.
They had, he was clear, committed entirely. The choral arrangement had activated and the suits had not merely stood in their places and produced sound. They had found, somewhere in two centuries of dormant enchantment, what could only be described as performance instinct. The suit on the Entrance Hall staircase — which he had designated as first voice — had its visor tilted at an angle that suggested it was aware of its own leading role. The suits on the second floor landing were arranged in a rough semicircle. The suit on the third floor landing had, as he had feared, encountered the ceiling clearance problem on the leaping lords and had resolved this by leaning sideways in a way that was technically within its spatial parameters and technically looked exactly like a suit of armour that had been interrupted mid-leap and was being dignified about it.
The photographs were moving, in the way of wizarding photographs. He could see, in the third image, the moment the armour reached the verse about the five golden rings — the suits had apparently decided, collectively, that the rings warranted a pause, a breath, and then a volume increase that the photograph communicated through the slight flinching of everyone in the foreground who had not been prepared for it.
In the fifth photograph: McGonagall.
McGonagall's expression in the fifth photograph was one he had never seen on her face in the months he had been watching it. It was not the controlled warmth she produced for students who had done something well. It was not the exasperated disbelief she reserved for things involving the trio. It was something older and more personal — the expression of someone who had been in this castle for a very long time and had just watched it do something she had not known it could still do, and who was allowing herself, in this specific unguarded moment, to be delighted by it.
He looked at that photograph for a long time.
"Ron," his mother said.
He passed her the first photograph. She looked at it. Then at him. Then at the photograph again.
"The suits of armour," she said.
"Yes," he said.
She looked at the performing armour in the moving photograph — the visor tilted at its self-important angle, the semicircle of second-floor suits, the third-floor suit leaning with dignity into its geometric constraints.
"The Twelve Days of Christmas," she said.
"All twelve verses," he confirmed.
She put the photograph down on the table with the careful precision she used for things she was going to need to look at again later, and picked up her tea, and said nothing further, which was her version of I have decided to be entirely unbothered by this and am implementing that decision immediately.
His father, who had looked up from the Prophet during this exchange, picked up the photograph his mother had set down. He looked at it for a moment. His expression held very still. He looked at the photograph a moment longer, then set it down.
"The activation sequence," he said, to no one in particular. "I've read about that. The 1743 Hogwarts charter amendment. I didn't know anyone had ever actually used it."
"It worked very well," Ron said.
His father looked at him with the expression of a man who had been a civil servant for twenty years and had developed very reliable instincts about what he was looking at. He said nothing.
Ginny had abandoned the Japanese cookbook and was looking at the photographs that Ron had spread across the table. She had found the third-floor suit in the leaping lords photograph and was looking at it with the specific focused expression she brought to things she found genuinely funny and was managing with dignity.
"The ceiling," she said.
"I know," he said.
"It's doing its best," she said.
"It really is," he said.
She looked at him. Her expression had the quality it had been arriving at since Egypt — the one that was simply itself, without the careful bracing beneath it.
"You're ridiculous," she said, with great warmth.
"The Witness is ridiculous," he said. "I'm just a bystander."
She made a sound that was a laugh converted, at the last moment, into something smaller, and went back to looking at the photographs.
The last photograph in the stack was not from the feast.
It was from after — the Great Hall empty, the armour back in their places, the notice boards. A single card on the Gryffindor common room board, cream-coloured, the unfamiliar hand, the golden eye with the line he mentioned.
And behind this last photograph, an addition from the elves
Happy Christmas. The castle remembers.
He looked at it for a moment.
Then he put it with the others in the inside pocket of his jacket, alongside the photograph of his parents at the Hogsmeade gate and the one of the Nile in the Egyptian evening, and went to help Ginny with the Japanese cookbook, because she had found the section on dashi and had a question about the kombu that he could actually answer.