Kaito's mom appeared in the kitchen doorway at 7:14 AM.

  She was already dressed. Black blouse, gray slacks, phone in hand. She stood the way she always stood in the kitchen: vertically, minimally, already leaving.

  "There's money on the counter," she said.

  "Yeah."

  "Is your friend staying?"

  "For a bit."

  "Okay." She picked up her bag. Picked up her keys. Walked toward the door.

  This was their rhythm. A call-and-response stripped down to its barest components. Language as a delivery system for logistics. Kaito had stopped expecting more around the time the breakfast notes stopped, which was around the time the breakfasts stopped, which was around the time everything stopped except the money.

  She paused at the door.

  "Kaito."

  "Yeah?"

  Two seconds. Didn't sound like much. Felt like an hour.

  "Make sure she eats breakfast."

  She left.

  He stood in the kitchen. She hadn't said anything like that in months.

  He looked at the counter. There were two sets of chopsticks laid out.

  She never left two. In three months of money-on-the-counter mornings, she had left one set of chopsticks. One plate. One glass. The daily arithmetic of a household that had forgotten how to count above one.

  Today there were two.

  He stared at the chopsticks for longer than chopsticks deserved. Then he went to wake up Noel.

  She had put socks on her hands.

  She was sitting on the bed, examining her sock-covered hands with genuine contemplation, holding them up to the morning light from the window like a scientist studying specimens.

  "I think these are wrong," she said when she noticed him.

  "They go on your feet."

  "...Both of them?"

  He should have explained. Demonstrated. Instead, some combination of impatience and morning fog made him walk over, kneel down, and just do it. He pulled the socks off her hands, took her foot, and put the sock on it. Then the other foot. Quick, practical, no thought given to the fact that he was touching her feet or that she was watching the top of his head from above.

  The gesture was intimate in its complete lack of romance. It was the intimacy of irritation. The closeness of someone who was already tired of explaining and decided it was faster to handle it personally.

  "Thank you," she said.

  "Stop thanking me. It's just socks."

  "No. Not for the socks."

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  He looked up. She was looking at him with those gold eyes and there was something in them that he recognized even though he didn't want to. Gratitude that went past socks. Past the bed and the guest room and the rescue in the rain.

  He stood up. Cleared his throat. Absolutely did not process the emotion he'd just been handed.

  "Yeah, well. Don't drink the shampoo."

  "Why would I drink the sha—"

  "Just don't."

  While Kaito showered, Noel wandered.

  She moved through rooms, touching things the way blind people read braille. Walls. Doorframes. The smooth surface of a kitchen counter. Each texture was data. Each object was evidence of a world she was beginning to catalog.

  She found the photographs.

  A hallway. Three frames. The first was a posed family portrait: a man, a woman, a boy of maybe eight, and an older girl of maybe twelve. The man was handsome in an unremarkable way. The woman was younger than the woman Noel had seen this morning, and more present. She was smiling with her whole face. The boy was Kaito. Small, gap-toothed, sitting on the man's shoulders. The girl was making a peace sign.

  Four people. The house had four bedrooms. The guest room she slept in used to be someone's room.

  Behind her, the translucent screen hovered:

  [WAITING FOR ACTIVATION TRIGGER...]

  The screen flickered.

  Gold. The faintest pulse. Noel felt it in her fingers before she saw it. The warmth moved through her hand, traveled up her arm, and settled quietly behind her sternum. It wasn't thought. It wasn't decision. It was something older than both. The system registering that she had identified a structural deficit in her bonded person.

  In human terms: she had just noticed someone was sad.

  Kaito came downstairs dressed for school. His tie was wrong. His hair was wrong. Everything about his appearance suggested a person who had assembled himself from a parts bin in the dark.

  He stopped in the living room.

  Noel was standing by the coffee table. She had taken the haphazard stack of magazines and books and rearranged them with terrifying precision, perfectly graded by descending millimeter of thickness. In the kitchen behind her, the spice jars and mugs had been meticulously lined up according to the wavelength of their color spectrum.

  He stared at the rainbow of ceramics. He stared at her. He let out a long, slow breath that wasn't quite a laugh but was the closest he'd come to one in days.

  "I have to go to school," he said.

  "School?"

  "A place where they make you learn things. Against your will, mostly."

  "How long?"

  "Eight hours."

  "Eight hours?"

  She didn't say please don't be longer than that. She didn't say I'll be alone. But it was in her eyes, and he was already learning that Noel's eyes said everything her mouth had the dignity to leave out.

  He pointed at the kitchen. "Food is in the fridge. Don't fight the microwave again. The TV remote is on the couch, press the red button and pictures will appear. They can't see you. Don't talk to them."

  "Why would I talk to—"

  "You're going to want to. Don't."

  He grabbed his bag. Opened the front door. Stopped.

  He didn't turn around. He spoke to the doorframe.

  "I'll be back at four."

  "Four," she repeated.

  "If anything catches fire, leave the house. Don't try to negotiate with the fire."

  "...Eh"

  "You tried to make a microwave obey. I'm not taking chances."

  He stepped out. The door clicked shut behind him. Gentle. Automatic.

  He was halfway down the block when he realized he'd told her he'd be back.

  Not I have to go. Not see you. He'd said I'll be back at four. A specific time. A promise with a number attached.

  He'd given Noel a time.

  She'd repeated it.

  "Four," she said to no one.

  The screen glowed behind her. The text at the bottom pulsed, slow and patient.

  [WAITING FOR ACTIVATION TRIGGER...]

  And beneath it, in text so small it was almost invisible, a new line had appeared:

  [BOND PROXIMITY: REGISTERED]