The registry response came on day seven of the return.
She was at the mismatched table when Mira brought it.
Not dramatic — Mira walked in from the broadcast room with a piece of paper and a clipboard and the specific expression of someone who had information and was processing it while delivering it.
She put the paper on the table.
"The evacuation registry north," she said. "First response. Partial match on four of the eight queries."
Lena looked at the paper.
Four names. Matched. With locations — the specific shelter addresses where they'd been registered at the northern cordon.
She looked at the four names.
Then up at Mira.
"Which four," she said.
"Kai's mother and sister," Mira said. "Shelter seven, Yamashiro. Registered day one of the evacuation."
Lena was quiet.
"Daisuke's family," Mira said. "His mother and younger brother. Shelter twelve, Yamashiro. Also day one."
She looked at the paper.
Day one. Both families had gotten out on day one. Before the cordon. Before anything could have stopped them.
"The other four," she said.
Mira looked at the clipboard.
"Pending," she said. "The query is with a second registry. The eastern cordon." She paused. "Three to five days."
Lena looked at the paper.
"Four matched," she said.
"Four matched," Mira confirmed.
She looked at the paper.
"Does Kai know," she said.
"Not yet," Mira said. "I came to you first."
She looked at Mira.
"I'll tell him," she said.
Mira nodded.
Put the clipboard on the table.
Went back to the broadcast room.
---
She found Kai on Higashimachi.
He was doing the street assessment. Block seven, the section north of his building, the map being extended incrementally the way maps were extended — one block at a time, verified, added.
He was crouching at a foundation wall, the specific focused attention of someone reading structural information in concrete.
He looked up when he heard her.
She stood on the pavement.
He looked at her face.
She'd learned — everyone who spent time with her learned — that her face was more readable than she thought. Not to everyone. To the people who paid the right kind of attention.
He stood up.
"The registry," he said.
"Yes," she said.
He looked at her.
"They got out," she said. "Your mother and your sister. Shelter seven, Yamashiro. Registered day one."
He was very still.
She watched him absorb it.
The flat certain expression doing something she hadn't seen it do before — not cracking, not breaking. Something more internal. The specific stillness of someone updating a weight they'd been carrying and finding the updated version much lighter.
He was quiet for a long moment.
"Day one," he said.
"Day one," she said.
He looked at his building.
At the third floor window.
At the notes his mother had left.
"She packed in the morning," he said. "She always packed before she needed to." He looked at the window. "She knew they should go before the alert even went off. Probably." He paused. "She always knew things before you needed to know them."
Lena looked at him.
At the thirteen-year-old who had been alone for three weeks by noticing things and had just been told the people he'd been noticing things for were safe.
She didn't say anything.
Some things didn't need words.
He looked at the window for a while.
Then he looked at his structural notes.
"Block seven," he said. "Four more buildings." He picked up the pen. "The registry will have their shelter number. We can try to contact them."
"Yes," she said.
"How," he said.
"Hiroaki has been working on the broadcast range," she said. "Shelter seven is within it if we boost the signal." She paused. "Mira is working on the protocol for reaching people at the evacuation shelters."
He looked at the building.
"When," he said.
"A few days," she said. "Maybe less."
He nodded.
Once.
The flat certain nod.
He went back to the foundation wall.
She watched him work for a moment.
Then she went to find Daisuke.
---
Daisuke was at the registry project table.
The mismatched table had expanded — two additional tables pushed alongside it, the registry project having outgrown its original space. Eight people now, plus Daisuke making nine, the document on its fifth version and growing.
She came in and said his name.
He looked up.
Read her face.
Stood up.
They went to the east alcove — the original planning room, the smaller space — and she told him.
His mother and younger brother. Shelter twelve, Yamashiro. Day one.
He sat down.
She sat across from him.
He didn't say anything for a while.
She waited.
The arcade around them. The generator. The warm light.
"My brother is eleven," he said.
"Yes," she said.
"He'd have been at school when it happened," he said. "The same school as me." He paused. "Different class."
She was quiet.
"He gets scared easily," Daisuke said. "Loud things. Sudden things." He paused. "The alert on every phone in the classroom—" He stopped.
She waited.
"My mother would have gone to the school first," he said. "Before she left. She would have gone to the school to get him." He paused. "That's why they registered day one. She went to the school, she got him, she left immediately." He paused again. "She wouldn't have waited."
Lena looked at him.
At the fifteen-year-old building a story from the registry data. Not the data itself — the data said *shelter twelve, day one.* He was filling in the shape of it. The mother who would have gone to the school first. The eleven-year-old who got scared by loud things.
"She didn't know where you were," he said.
"No," Lena said.
"She would have gone to the school," he said again. "And you weren't there."
"No," she said.
He was quiet.
"She would have left a note," he said.
She thought about the apartment on Higashimachi. The careful packing. The things his mother had selected.
"Yes," she said. "I think she would have."
He looked at the floor.
"I looked at everything in the apartment," he said. "I didn't find a note." He paused. "But the kitchen table had been cleared. She always cleared the kitchen table when she was going to leave a note." He paused again. "Someone else was in the apartment after. They might have—"
"The person who said thank you," she said.
He looked up.
"The person who used the kitchen and left the thank you note," she said. "They might not have known the cleared table was—"
"Might have tidied it," he said.
"Yes," she said.
He was quiet.
She was quiet.
The arcade around them.
"She left a note," he said. "I know she did." He paused. "I'll tell myself she did until I can ask her."
She looked at him.
"When you can ask her," she said.
He looked at the floor.
"When I can ask her," he said.
The specific weight of the difference.
He looked up.
"The signal boost," he said. "To reach the shelters. How long."
"A few days," she said.
"I want to be in the room when we try to reach shelter twelve," he said.
"Yes," she said. "Obviously."
He looked at her.
Almost smiled.
"Obviously," he said.
He stood up.
Went back to the registry table.
She sat in the east alcove for a moment.
Then she picked up the pen.
Wrote the heading:
*Day seven. The registry's first response.*
She kept writing.
---
At noon Ren found her.
She was still writing.
He sat across from her.
Looked at the pages.
"Kai," he said.
"He knows," she said. "He went back to block seven."
"I know," he said. "I saw him." He paused. "He was working faster than usual."
She looked at the pages.
"Daisuke," he said.
"He knows too," she said. "He's at the registry table."
He was quiet.
"The other four," he said. "The pending queries."
"Eastern cordon registry," she said. "Three to five days."
He was quiet.
"Whose," he said.
She thought about the eight names in the first batch. Kai. Daisuke. Six others from the arcade group.
"Three from the original Kawanami Arcade occupation," she said. "One from the Yamaguchi Building."
He was quiet.
"Not all four will match," she said. "The eastern cordon had gaps. Not everyone who went through registered. Some people didn't — couldn't—" She stopped. "The response might be partial."
He looked at the table.
"What do we do if it's partial," he said.
She looked at the pages.
"We send to the next registry," she said. "There are four in total. The northern, the eastern, the coastal shelter network, and the inland emergency system." She paused. "We work through all four."
He was quiet.
"And if someone isn't in any of them," he said.
She looked at the pages.
"Then we know what we know," she said. "And we keep the name on the wall."
He looked at her.
She looked at the pages.
"The wall is for everyone," she said. "Not just the confirmed losses. Everyone we're looking for." She paused. "The names we find go off the wall eventually — not because we remove them, because we add the information. The search resolved. The person found or not found." She paused again. "The wall holds the open searches."
He looked at the record.
"That's not what I said to Axel," he said.
"No," she said. "I've been thinking about it since."
He was quiet.
"It's better," he said.
"Yes," she said.
He looked at the pages.
She looked at the pages.
"Write it," he said.
She picked up the pen.
Wrote it.
---
At 2pm Hiroshi found her.
The civil engineering graduate student. Water systems.
He'd been at the arcade for two days now. She'd learned more about Namiura's water infrastructure in those two days than she'd known in the seventeen years before.
He came to the mismatched table with a piece of paper.
She looked at it.
A diagram. Namiura's water treatment system. The main facility, the distribution network, the specific points of failure that three weeks of non-maintenance had introduced.
"The water treatment facility," he said. "I went there this morning."
She looked at him.
"I assessed it," he said. "With the Changed dispersal at current levels the facility is accessible. The maintenance schedule lapsed three weeks ago. Two of the primary filters need replacement. The pump system is intact but the electrical—" He looked at Lena. "Hiroaki."
She looked at him.
"We need Hiroaki at the water facility," he said. "The electrical system is within his capability. With his help we can have basic water treatment operational in—" He looked at the diagram. "A week. Maybe less."
She looked at the diagram.
At the specific infrastructure of a city — the invisible systems that made it possible to live in a place. The water that came out of taps and had always come out of taps and had stopped coming out of taps on Tuesday and needed to come out of taps again.
"A week," she said.
"With the right people," he said.
She looked at the diagram.
"What else do you need," she said.
He put another piece of paper on the table.
She looked at it.
A list.
Specific. Precise. The list of a person who knew exactly what they needed and had written it down accurately.
She read it.
"The depot might have some of this," she said. "Marcus's people — they've been at the docks. They'd know what's in the harbor storage."
"Toshi," Hiroshi said.
"Yes," she said.
"I talked to Toshi this morning," he said. "Before the water facility. He said three of the items on the list are in the harbor storage." He paused. "He offered to take me."
She looked at him.
"You organised this before you came to me," she said.
He looked at the diagram.
"I verify before I report," he said.
She looked at him.
At the civil engineering graduate student who had walked into the arcade two days ago asking *what do you need* and had spent two days finding out and had arrived at the mismatched table with the verified version of what could be done.
"You've been spending time with Kai," she said.
He looked up.
"He's been helping with the assessment," he said. "The southern downtown blocks."
She looked at the diagram.
At the list.
"Go to the harbor storage," she said. "Take Toshi. Take Hiroaki." She paused. "Get what you need."
He nodded.
Picked up the papers.
"One week," he said.
"One week," she said.
He went to find Toshi and Hiroaki.
She looked at the table.
Then she picked up the pen.
Wrote: *Day seven. The water systems.*
Kept writing.
---
At 4pm Axel broadcast.
Three sentences and the fourth.
He turned off the radio.
"Twenty-six," he said.
She looked up.
"Twenty-six people," he said. "Someone came in while I was broadcasting."
She looked at the arcade.
Twenty-six.
"The adjacent buildings," she said.
"The third opened this morning," he said. "We have capacity for—" He paused. "A few more days."
She looked at him.
"The fourth building," she said.
"Hiroaki assessed it last week," he said. "It needs two days of work."
"It doesn't have two days," she said.
He looked at her.
"Start today," she said. "Whatever needs doing — start today." She paused. "At this rate we'll need it before the week is out."
He looked at the arcade.
"Twenty-six," he said. Again. The arithmetic of it.
"The broadcast is working," she said.
"Yes," he said.
"The city is coming back," she said.
"Faster than we thought," he said.
"Good problem," she said.
He looked at her.
Something in his expression — not the forward momentum. The thing underneath. The thing that had been there since the convenience store on Tuesday.
"Yes," he said.
He picked up the steel bar.
Went to find someone to start on the fourth building.
---
At 6pm she went to find Kai.
He was at the arcade roof.
Not the flat section — the stairwell access hatch, the highest point accessible from the arcade's own structure. Sitting at the top of the stairs with his legs over the edge and the city visible below him.
She climbed to him.
Sat beside him.
The city in the evening light. The southern downtown visible from here — the blocks they'd assessed, the buildings becoming known. Beyond that the harbor ward. The eastern docks. The rest of the city.
Still to be mapped.
Still blank.
He was looking at the city.
She looked at the city.
"Block seven," she said.
"Done," he said. "Four buildings. All assessed. Three accessible now. One in two weeks."
"Good," she said.
He was quiet.
"Tomorrow I'm starting block eight," he said.
"Okay," she said.
He looked at the city.
"My mother would have left a note," he said. "Like Daisuke's mother." He paused. "She always left notes." He paused again. "I found three notes in the apartment. But those were old ones. The one she left on Tuesday—"
"Would have been on the kitchen table," Lena said.
He looked at her.
"How do you know," he said.
"Daisuke said his mother always cleared the kitchen table before leaving a note," she said. "The table in your apartment was cleared when you went back."
He was quiet.
"You noticed that," he said.
"You told me," she said.
"I didn't tell you," he said. "I said I found notes. I didn't say where they weren't."
She looked at the city.
"The kitchen table," she said. "It was the first thing I looked for when you described the apartment. The surface most likely to hold a note left in a hurry." She paused. "You said the apartment was in order. Not packed — but in order. Like someone had moved carefully rather than in panic." She paused. "Mothers who pack carefully clear surfaces before they leave."
He was quiet for a long moment.
"You've been thinking about this since Higashimachi," he said.
"Yes," she said.
He looked at the city.
"There was a note," he said. "I just didn't find it."
"I think so," she said.
He was quiet.
"She'll tell me what it said," he said. "When we reach her."
"Yes," she said.
He looked at the city.
At the blank spaces still to be mapped.
"A few days," he said. "For the shelter contact."
"Yes," she said.
He was quiet.
Then: "It's a big city."
She looked at the city.
"Yes," she said.
"Getting bigger," he said. "As we map it."
"Yes," she said.
He looked at the blank spaces.
"I'll do block eight tomorrow," he said. "And nine if there's time." He paused. "We should have the downtown complete by the end of next week."
She looked at the city.
At the blank spaces.
At the specific enormity of what was still to be known.
"Yes," she said. "We should."
They sat on the arcade roof in the evening light and looked at the city getting larger.
The harbor lights coming on below.
The first star at the horizon.
She looked for it.
There.
"The star," she said.
He looked.
"Yes," he said.
"Every night," she said.
"Every night," he said.
She looked at it.
Then at the blank spaces on the map in her head.
Then at what had been mapped.
"Okay," she said.
They climbed back down.
---
At 8pm she read the day's record sections to Ren.
At the mismatched table. The arcade around them.
She read the registry response. The four matched names. Kai going back to block seven. Daisuke at the registry table. The wall holding open searches.
She read the water systems section. Hiroshi's diagram. One week.
She read what she'd written about the coast holding what the city exhaled — the Drowned City dispersing into the bay, the people becoming part of the light.
She read the evening section. The arcade roof. Kai looking at the blank spaces.
She put the pages down.
Ren was quiet.
"The blank spaces," he said.
"Yes," she said.
"We're going to fill them," he said.
"Yes," she said.
"All of them," he said.
She looked at the pages.
"Eventually," she said.
He looked at the pages.
"Eventually," he agreed.
She picked up the pen.
"The water systems," he said.
"One week," she said. "Maybe less."
"When the water comes back," he said. "The apartments become liveable again." He paused. "People can go home."
She looked at the pages.
"Yes," she said.
"That changes things," he said.
"Yes," she said. "It does."
He was quiet.
"The next phase," he said.
"The next phase," she said.
She kept writing.
He sat with her.
The arcade around them.
Twenty-six people.
The blank spaces in the map getting smaller.
The registry finding people.
The water systems a week away.
The city coming back.
She wrote.
He sat with her.
The warm room.
Still standing.
Still warm.
Still theirs.
---
**Author's Note**
Day seven. The registry response.
Four matched. Both families — Kai's and Daisuke's — out on day one. Before the cordon. Safe.
Kai going back to block seven immediately. Working faster than usual. That's how he processes things — by moving. By making the map larger. The thing that needs doing is the thing that gets done.
Daisuke building the story from the data. *She went to the school first. She got him. She wouldn't have waited.* He doesn't have the full picture yet but he has the shape of it — the mother who would have cleared the kitchen table and left a note before she left. The note that was probably tidied away by the stranger who said thank you.
*I'll tell myself she left a note until I can ask her.* That's the most honest thing Daisuke has said.
Hiroshi with the water systems diagram. *I verify before I report.* He's been spending time with Kai. The influence travels — the specific discipline of checking before saying. The arcade developing its own culture of verification.
The wall holding open searches rather than confirmed losses. The names that are found come off the wall with the resolution — not removed, updated. The wall holds what's still unknown. That's better than what Axel said in Chapter 42 and she knows it and says so.
*She'll tell me what it said. When we reach her.* Kai on the arcade roof. The kitchen table cleared. The note that was there and wasn't found and will be described when they reach shelter seven.
*Okay,* she says to the blank spaces.
One week to water.
The city getting larger.