He clicked YES.
The screen returned to normal. His engineering software was open, the anchor specifications half-drafted, as though nothing had happened. There was no confirmation message. No receipt. No acknowledgment that a man had just agreed to something the details of which he did not fully understand, at twelve-fifty in the morning, in his own study while his family slept.
He sat with it for a moment, the way you sit with a choice that cannot be undone. Then he went back to the specifications. The work had always been the thing that kept him functional.
The days that followed were, on the surface, unremarkable.
Aiko continued teaching. Her current unit on unreliable narrators was generating, she reported over dinner, more genuine classroom discussion than she'd had in years. "They keep arguing about whether the narrator is lying or just wrong," she said, pleased, passing Riku the soy sauce. "That's exactly the right argument to have. Most of the interesting disagreements are about the difference between deception and self-deception."
"What's the difference?" Hana asked.
"Self-deception is when you lie to yourself so successfully that you forget you're lying. Deception is when you know the truth and choose not to share it."
Riku helped himself to more rice. "That sounds the same from the outside."
"From the outside, yes. That's the horror of it." Aiko looked at Kenji with the unguarded brightness she got when a conversation interested her. "Don't you think?"
"I think," Kenji said carefully, "that the person doing the deceiving usually knows which one it is, even if no one else can tell."
Aiko nodded, satisfied. Hana watched her father.
Riku, across the table, was doing what he always did — the thing he called not paying attention and everyone else called paying very close attention — and he noticed that his father had answered a question about abstract concepts using the specific phrasing of personal experience. He noticed, filed it, and went back to his rice, because he was seventeen and had learned that sometimes the kindest thing you can do for someone is to not notice out loud.
In the evenings, Kenji worked. He completed the anchor specifications, encoded them in a file that wouldn't mean anything to anyone who didn't already know what they were looking for, and uploaded them to the frequency-based system the voice — his other self — had built. The system acknowledged receipt with a brief oscillation in the audio channel: one pulse, pause, three pulses. A heartbeat.
He also, during those three weeks, observed his family with the particular attention of a man who is memorizing something.
He noticed that Riku always started his homework later than he intended to and stayed up past midnight to finish it, and that despite this — or because of it — his grades were consistently excellent. He noticed that Riku had strong opinions about music that he expressed only in his room, alone, at a volume that he thought no one could hear through the walls. Kenji could hear it. He'd never mentioned it. The music was good.
He noticed that Hana had a system for her cat photographs — not just quantity, but a taxonomic organization she'd developed on her own, sorting them by ear shape and eye color and the specific angle of the tail when sitting. He found the spreadsheet once, by accident, and closed it quickly without mentioning it, because she hadn't shared it with him and he understood the difference between observing and intruding.
He noticed that Aiko, who talked constantly and beautifully about books and her students and the world, had a particular silence that came over her when she thought she was alone — at the kitchen window, or in the bath, or sometimes at her desk when she thought he was asleep. A silence that was not sad, exactly, but thoughtful in a way that suggested she was conducting some interior accounting that she hadn't shared with him. He had always been afraid to ask what she was counting.
These were the last ordinary days. He would not know they were ordinary until they were over.
The Kyoto trip began on a Friday morning in April, four days before the point his models had calculated as the beginning of the seismic acceleration phase. He had chosen the dates carefully: late enough that the frequency resonance under the mountain would be at its monthly peak, early enough that there was no risk of tremors in the approach window.
Hana brought three camera lenses and a backup battery pack for her tablet, having apparently decided that Kyoto's cat population warranted maximum photographic preparedness.
Riku brought his headphones and one book he would not read and the expression of someone who is secretly looking forward to something he has committed to publicly pretending is a burden.
Aiko brought two novels, a journal, and a persimmon candy she'd been saving for the train, because she'd read once that persimmon was good for long journeys and had been looking for a long enough journey ever since.
Kenji brought a notebook he did not expect to need.
Kyoto was everything it was supposed to be. The temples were cool and crowded with spring light. The bamboo grove was loud with tourists and still somehow, in certain angles of the afternoon, completely silent. Hana photographed eleven cats in two days, plus one tanuki that she wasn't sure about but included anyway. Riku climbed to the top of Fushimi Inari with his headphones in and no visible enthusiasm and was photographed by three separate groups of tourists, which he regarded with a mixture of horror and involuntary pride.
On the second evening, Aiko and Kenji sat alone on the veranda of the ryokan while the children were inside. The garden was lit by paper lanterns. Somewhere in the distance, a bell was ringing, measured and unhurried, counting something.
Aiko had her journal open on her lap but wasn't writing in it. She was looking at the garden.
"You've been different," she said.
Kenji did not pretend not to understand. "I know."
"For a long time now. Not worse — I want to be clear about that. But different."
"Yes."
"I've been waiting for you to tell me."
"I know that too."
She looked at him. In the lantern light her face was soft and exact, the way his wife's face was always exact — not perfect, but precisely, completely herself, every feature in exactly the right place for who she was.
"Can you tell me tonight?"
He thought about it. He thought about the frequency, the portals, the earthquake, the trials. He thought about the voice — his own voice, four years older, hollowed out by loss — saying: you'll understand when you're where I am.
"Not tonight," he said. "On the train home. I promise."
She looked at him for another moment, and whatever she saw in his face was enough — not reassurance, exactly, but honesty. The knowledge that what he was holding was real, and held carefully, and would eventually be shared.
"On the train home," she said, and went back to not-writing in her journal.
The bell in the distance rang on, patient and unhurried.
They took the Shinkansen home on Sunday afternoon. The mountains of central Japan slid past the windows, enormous and blue in the spring haze. Hana was asleep against the window, her tablet resting on the fold-down tray with her cat taxonomy open on screen. Riku was awake, one headphone on, one off, in the posture of someone maintaining the option of rejoining the world at any moment.
Aiko was reading. She had the particular absorbed stillness of someone three-quarters of the way through a book they had decided to love, and Kenji had been watching her for twenty minutes, storing the image, trying to memorize it: his wife reading on a train in April, the mountain light moving across her face.
He checked his watch.
Four minutes.
"Aiko," he said.
She looked up.
"I need to tell you something. And I need you to know that everything I've done — even the things I should have done differently — I did because—"
— ✦ —
The lights in the carriage went out. Outside the windows, the mountain vanished as the Shinkansen entered the tunnel. And in the sudden darkness, Hana gasped — not the small sleep-gasp of being startled awake, but the sound of recognition, of something expected finally arriving — and Kenji understood, with a lurch of love and horror, that his daughter had known this moment was coming. That she had been waiting for it. That she had read the notebook more carefully than he'd imagined. And then the light appeared in the window — blue-white, humming, expanding — and there was no more time for any of it.