They were married the following year.
The ceremony was held in a garden in late summer, the sun low and warm and the shadows long across the grass. Hermione wore white with small flowers in her hair. Kevin managed not to cry, which he claimed had never been a possibility, and which no one who saw his face when she walked toward him believed for a single moment.
The Muggle neighbour three doors down from the Grangers — who had been quietly observing the unusual household next door for years, had developed a long-standing private theory about the nature of their lives, and had made peace with the fact that he would never be able to prove it — stood at his window that afternoon and watched an unusually large gathering of people in unusual clothes celebrating something in the garden. He didn't investigate further. It was, he felt, not his to know. He simply held onto the warm certainty that the world contained more than it admitted to, poured himself a cup of tea, and watched the light change.
Seventeen years passed in the way that full years do — quickly, and leaving behind the sense that they could not possibly have been so brief.
"Edmund Croft, if you are not downstairs in sixty seconds, I am writing to the school and recommending your letter be rescinded!"
Kevin's voice carried up two flights without apparent effort. He was entirely calm about it, which was, in context, more alarming than shouting.
A crash from upstairs. Rapid footsteps. An eleven-year-old came careening around the corner of the staircase with his tie at a creative angle and his hair defying all known physical principles, and pointed one finger at his father across the kitchen.
"That is an abuse of authority! I am reporting you!"
"To whom?" Kevin asked, spreading marmalade on toast with complete serenity.
"To — to the Ministry—"
"Your mother is the Ministry. Sit down."
Edmund — Ed, always Ed, and only Edmund when he was actively in trouble, which was more often than strictly necessary — stood in the kitchen doorway running the arithmetic on this and finding it deeply unsatisfying. He made a noise somewhere between a growl and a snort. He sat down and seized the toast.
"I'm still filing a complaint," he said, chewing.
"Noted." Kevin flicked him once on the forehead with two fingers. A small red mark appeared. Ed yelped.
"Kevin."
Hermione in the doorway, Ministry robes, bag over one shoulder, the expression of a woman who has navigated this particular morning dynamic for eleven years. Seventeen years had settled into her in the best possible way — she was the same Hermione, and also more; there was a steadiness in how she held herself now, a quiet certainty, that had been there in seed form at school and had grown into something rather formidable.
She was, in fact, the Minister for Magic. She had been for three years. The Ministry had not known what had hit it.
"We are going to miss the train," she said. "Both of you. Finish."
Platform Nine and Three-Quarters was its usual chaos — steam and owls and overlapping announcements and parents wearing the collective expression of people trying to hold themselves together in a public space.
The Hogwarts Express stood at the platform in brilliant scarlet, already breathing with impatience, already half-loaded.
Kevin and Hermione found the others without searching. Harry and Ginny with their three — James and Albus somewhere in the crowd, Hogwarts veterans both, and Lily in her new robes holding her mother's hand with the studied composure of someone who was thrilled out of her mind and absolutely determined not to show it. Ron with his wife and their two. Draco and Astoria, with Scorpius, who had his father's colouring and, so far at least, his mother's disposition, which Kevin considered a reasonable outcome.
Astoria looked well. Better than well — better than anyone who'd seen her at her worst in those early years would quite have believed possible. The blood curse she'd been born with had not been fixable, not entirely, but Kevin had spent two years finding a way around the unfixable. A matched anchor curse, balanced and calibrated, distributing the burden across two carriers rather than one. Regular management. Occasional flare-ups. A normal life, mostly. Still standing. Draco had not said thank you in so many words, because he was Draco, but he had also never let Kevin pay for a meal in seventeen years, which amounted to the same thing.
Harry's older two had already vanished into the crowd with the efficiency of people who knew exactly where they were going. Lily was watching for something.
"Lily!"
Ed had spotted her from thirty feet away and was moving with the focused inevitability of a very small missile. Lily's face broke open completely and she dropped her mother's hand and ran toward him. They met somewhere in the middle and collided in the way that children who have known each other their whole lives collide — without preamble, both talking at once, already mid-conversation.
Kevin watched this and put an arm around Harry's shoulders.
"Yours," he said pleasantly, "is going to have her work cut out for her."
"Mine?" Harry turned to look at him.
"The chaos engine currently running at your daughter is mine. Your daughter ran toward him."
"She ran toward a friend—"
"She's known him her whole life. There's a difference." Kevin's expression was one of complete serenity. "You're welcome."
A vein appeared at Harry's temple. He had made his peace with this particular future long ago. What he could not make peace with, and had largely given up trying, was Kevin's uninterrupted seventeen-year commentary on the subject.
Hermione appeared at Kevin's other elbow and pressed two fingers to the back of his head, lightly, with the authority of long practice.
Kevin accepted this without comment.
Ron arrived with his family. Draco and Astoria joined the cluster. The children from all four families knew each other the way children know each other when their parents have been close their whole lives — completely, competitively, and with an ease that made it look effortless from the outside. They pulled together on the edge of the adult gathering and began whatever conversation had apparently been waiting to resume from the last time they'd all been in the same place.
Ginny crouched down to Ed's level and said something that made him stand up very straight and look very serious and then nod once with the gravity of someone taking on a genuine responsibility. He glanced at Lily, who was watching him expectantly, and nodded again.
Kevin looked at Harry. Harry looked at Kevin. They said nothing. They had been friends long enough to not need to.
The first whistle blew.
The platform became a controlled avalanche — final hugs, last-minute instructions about letters home and eating properly and not doing anything that would require owl-post from the Headmaster's office, trunks being hauled up the steps, owls registering their objections. Mrs. Weasley would have cried. They carried it forward as a group memory.
Hermione pressed her forehead briefly to Ed's and said something Kevin couldn't hear. The boy listened with his mother's expression — focused, still, taking it in — before the grin surfaced.
Kevin crouched down.
Ed looked at him with Kevin's eyes and Hermione's jaw and the specific expression that meant he was already composing something to argue with later.
"Gryffindor," Kevin said.
"Obviously," Ed said.
"Don't blow anything up in the first week."
"I make absolutely no promises about that."
Kevin looked at him for one more moment. Ed looked back.
"Go on," Kevin said.
Ed went — turning immediately to find Lily, who had been waiting two steps away with her trunk and the patience of someone who had learned to wait out the Croft family's specific brand of farewell. They boarded side by side, already talking, already gone.
The second whistle. Steam rising. The long, gathering motion of something enormous beginning to move.
Hermione found Kevin's hand.
On the train, two faces appeared at a window — Edmund waving with his free hand, Lily with hers, both of them already laughing at something only they could see.
Harry and Kevin stood together on the platform and watched the Hogwarts Express pull away through the steam, the scarlet carriages growing smaller, and then smaller still, and then gone.
"Every year," Harry said.
"Every year," Kevin agreed.
The platform thinned around them. Parents drifted back toward their lives. Ron was somewhere behind them telling a story about work that Draco was pretending with decreasing conviction not to find interesting.
Kevin stood there a moment longer, watching the last threads of steam dissolve above the empty track.
He had arrived in this world as a stranger to all of it. An orphan in two senses — the one that came before, and the one that waited when he landed here. He had understood it as a situation to be managed, a problem to work through with whatever he had on hand. He had not planned any particular part of what came after. He had not planned Hermione, or Harry, or Dumbledore and his schemes, or Snape and his withering commentary, or Grindelwald and his inconvenient longevity, or the group of people who had, over years of shared catastrophe and shared ordinary life, become as much his as anything he'd ever had.
He had not planned to stay.
And yet.
Hermione's hand in his. The ring on her finger catching the light. The fading sound of the Express somewhere beyond the wall.
He looked at her.
She was already looking back, with the expression that meant she'd followed the thought wherever it had gone and found herself there too.
He squeezed her hand.
She squeezed back.
They walked off the platform together, into the perfectly ordinary morning.