Kairo didn't move.
The torch beam sat on the wall outside his door, steady and patient. Ren wasn't climbing. He was waiting at the bottom of the stairs — at the exact spot where Setsuna Mitsune had stood before he came down to die.
Kairo wondered if Ren knew that.
He wondered if that was why he had chosen it.
If he moves on you, you move first.
Ren hadn't moved. Ren had turned on a light and announced himself, which was the opposite of what a hunter did.
Kairo stepped out onto the landing.
The torch dropped at once to the floor between them, the beam pointed at the boards. A courtesy. Neither of them blinded.
Ren stood at the foot of the stairs in a dark coat, no school uniform, no easy smile. He looked older without it. Tired in a way he never let the classroom see.
"How did you get a key?" Kairo said.
"My family owns the house now." Ren's voice was flat. "Or they will on Monday. Keys are easy."
"You said you want to talk about my mother."
"Come down first. If they come through that door, I want you closer to the back window than I am."
Kairo looked at him for a long second.
Then he came down the stairs.
He stopped on the third step from the bottom. High ground. Close enough to the kitchen doorway to be through it in two strides. Ren noticed. Something at the corner of his mouth said he approved.
"Talk," Kairo said.
Ren reached into his coat slowly — slowly enough to be a message — and took out something small. He held it in the torchlight on his open palm.
An origami crane.
Folded from white paper gone soft and grey at the edges. The wings slightly crushed, the way something got crushed when it had been carried in a pocket for a very long time.
"Four months before she died," Ren said, "your mother found me."
The house was very quiet.
"Tokyo. Shinagawa station. I was coming back from — it doesn't matter what I was coming back from. She sat down next to me on a platform bench like she'd been waiting there all day. Maybe she had." He looked at the crane. "She knew my name. She knew my father's name. She knew what I'd been doing since I was fifteen."
"What did she want?"
"Nothing. That was the strange part." Ren's jaw moved. "She said, One day they will send you to find my son. When they do, you will have to decide what kind of Souen you are. Then she folded this out of a train ticket, put it in my hand, and got on the next train."
Kairo stared at the paper crane.
Crane. Mitsune. The crane has fallen.
"I didn't know what she meant," Ren said. "Then in October my father called me into his office and told me I was transferring to a school in Kyoto."
"You could be lying."
"I could." Ren held his palm out further. "You can check."
Kairo came down the last three steps.
He took off his glove.
He touched the crane.
His mother's hands. Unmistakable. Quick and precise, folding without looking, her mind entirely on the boy sitting next to her. Not fear. Not hatred. Something steadier than both — the patient calculation of someone planting a seed in ground she knew she would never see again.
And underneath her, layered over and over and over — Ren.
Ren holding it on a bullet train. Ren holding it at a desk at two in the morning. Ren turning it over and over in a dark room in his father's house, the same question pressed into it a hundred times until the paper had gone soft.
What kind of Souen am I?
Kairo took his hand away.
"She was telling the truth," he said quietly. "And so are you."
Ren closed his hand around the crane and put it back in his coat. For a moment his face wasn't composed at all.
Then it was again.
"Why you?" Kairo said. "Out of everyone in your family. Why would she go to you?"
"I asked myself that for four months." Ren glanced at the front door, then back. "The only answer I have is that she'd been watching me longer than I'd been watching anyone. She knew which of us was the second son. She knew what that meant in my father's house."
"What does it mean?"
"It means you're useful," Ren said, "until you're not."
He said it the way someone said the weather. That was what made it land.
"Two minutes," he said. "So listen. Monday's closing date was a lie. The sale finished on Wednesday. This house has been theirs for three days and they have been waiting for you to come back to it. The team is due at eleven. I told them I'd do a walk-through first."
Kairo went cold.
Kenji's list. The date. Closes Monday.
"Someone gave false paperwork to the man who told me."
"Someone gave false paperwork to everyone who was watching," Ren said. "My father doesn't hunt. He builds a door and waits for you to walk through it."
Outside, the bicycle bell rang.
Three times. Sharp.
Ren's head turned toward the front door. Headlights slid across the frosted glass — one car, then a second, pulling up without hurry.
"Early," Ren said, very softly. "Of course they're early."
He looked at Kairo.
"Did you find it?"
The staff paper sat folded in Kairo's jacket pocket. He could feel it against his chest, as if it were warm.
"No," he said.
Ren held his eyes for half a second too long.
"Good," he said. "Then there's nothing here for them to take." He stepped back into the hallway and raised the torch. "Back window. Over the Nakamura wall — it's lowest by the persimmon tree. Don't run until you're past the second house. Running is what they watch for."
Car doors closed outside. Two. Three.
"Why are you doing this?" Kairo said.
Ren didn't answer. He had already turned toward the front door, his shoulders settling, his face rearranging itself into something smooth and bored and entirely Souen.
Kairo went.
Kitchen. The chipped table. The window with the broken latch. He was through it and onto the cold grass before the front door opened behind him, and he heard voices in the hallway — low, professional — as he crossed the garden in the dark.
The Nakamura wall was lowest by the persimmon tree.
He went over it the way Nami had taught him to take a fall. Chin tucked. Weight rolled. Up again in the same motion.
Something small and grey shot out from under the persimmon tree and vanished into the hedge.
The Nakamura cat.
It had found its way home after all.
He crouched behind the wall and made himself breathe. In for four. Out for four. Then, because he had to know, he raised his head just enough to see over it.
His bedroom window glowed with torchlight.
Someone was standing inside, directly beneath the ceiling where his mother's crack had been opened and not closed again. The beam was fixed on it. Unmoving.
Ren.
He had gone upstairs before the others came in.
He had seen.
Kairo watched the torch hold on that ceiling for three long seconds. Then it clicked off.
A man's voice came from the hallway downstairs. Kairo knew it — flat and professional, the voice from behind the shoe lockers.
"Well?"
A pause.
"Empty," Ren said. "He never came."
Kairo stayed behind the wall until the voices moved deeper into the house.
Then he walked — didn't run — past the second house, and the third, to the corner where a girl with a bicycle was waiting under a broken streetlight with her hands shaking on the handlebars.
"You're alive," Aoi said.
"Ren lied for me."
She looked at him.
"Or," she said slowly, "he wants you to believe he did."
Kairo touched the folded paper in his pocket.
He didn't have an answer.
He was starting to think that with Souen Ren, he never would.