Third period was Modern Literature.
The text was Natsume Soseki — Kokoro, the passage near the end where the Sensei writes his long letter and the narrator reads it on the train and understands, too late, the weight of everything that was left unsaid between them. It was on the curriculum. Kairo had read it twice already, once in middle school and once over the summer out of curiosity rather than requirement. He found it precise in the way only certain sad things were precise — it described an experience he hadn't had yet and somehow made him feel he already understood it.
He was midway through annotating the third paragraph when the classroom door opened.
Mori-sensei — the school counsellor, a woman in her mid-forties with reading glasses she kept on a chain and a manner that was professionally warm without being dishonest about what lay beneath the warmth — stepped inside with an expression Kairo recognised immediately. He had seen it on the faces of adults his whole life in small doses — the look of someone carrying information they hadn't chosen to carry and were now obligated to deliver.
She spoke quietly to the homeroom teacher near the door. Too quietly to hear. The homeroom teacher's face went through three small changes in rapid succession — understanding, concern, and the particular blankness of professional composure reasserting itself. He looked at the seating chart on his desk. Found Kairo's row.
"Mitsune. Please bring your bag."
The classroom had that specific quality of silence that meant everyone had stopped what they were doing while performing the act of continuing it. Kairo felt it without looking at any of them. He closed his notebook, capped his pen, lifted his bag from the hook at the side of his desk, and stood.
He followed Mori-sensei into the hallway.
She walked slightly ahead of him. People walked slightly ahead when they were managing something — it gave them the appearance of leading rather than delivering, which was easier on both parties. Kairo matched her pace precisely, watching the back of her head, noting the tension in her shoulders that she was working to keep out of her posture.
Left at the administrative wing.
Not right toward the infirmary. Left. Which meant this wasn't a health matter. Which meant it was something that required an office with a door.
The counselling room had two men in it already.
Plain suits. The kind of plainness that was deliberate — nothing memorable, nothing that would catch the eye in a photograph. They had the measured posture of men who spent their working lives in rooms where people received bad news, and had therefore developed a physical vocabulary for it: hands visible and still, no crossed arms, seated rather than standing to reduce the sense of authority, expressions calibrated to convey neither distance nor false warmth.
Police. Not uniformed — which meant they were either detectives or something adjacent.
"Mitsune Kairo-kun," the older one said. "Please sit down."
Kairo sat.
Mori-sensei took a position near the door — close enough to be present, far enough to give the detectives the necessary space. Her hands were folded in front of her. She was watching him with the careful attention of someone prepared to respond to a wide range of reactions.
The older detective began.
He was precise about it. Choosing words the way a surgeon chose an incision point — minimum damage for maximum access. Discovered this morning by a neighbour. Emergency services responded immediately. The scene has been secured. The investigation is in early stages. Each sentence placed carefully before the next, building toward the shape of what had happened without naming it directly until the shape was already clear.
His father.
His mother.
The official account, as it currently stood, was that his father had — there was a pause here, brief, professional — acted violently, and then turned the action on himself. The investigation was ongoing. These things took time. They were very sorry.
Kairo looked at the older detective.
Then at the younger one.
Then at his own hands resting on his thighs.
Murder-suicide. The phrase was never used. But it was the architecture of every sentence they had spoken — the shape the words made when you removed the careful scaffolding around them.
He understood what they were telling him.
He also understood, with a clarity that arrived not as thought but as physical certainty — a stillness in the chest, a settling of something that had been briefly airborne — that it wasn't true.
He didn't know how he knew. He had no evidence. He had nothing but the memory of his father's hand on his shoulder that morning and the weight in those two words — walk carefully — and the absolute, structural impossibility of the man he had watched fold a newspaper with precision and drink his tea and look at his son like he was memorising something — the impossibility of that man choosing to end anything the way they were describing.
He said none of this.
"Is there someone we can contact," the younger detective said, "a family member or—"
"No," Kairo said. "There isn't."
His voice came out even. This surprised him slightly. He had expected something to crack in it and nothing did.
The procedural part followed. A distant relative — his mother's cousin, Harue, whose name was apparently already in some document they had accessed — was contacted. Forms were signed. Mori-sensei spoke to him quietly about grief counselling and school arrangements and other things he heard correctly and retained nothing of. Someone brought him water in a paper cup and he held it without drinking it.
At some point the afternoon had arrived without him noticing.
Harue was a quiet woman in her early fifties who lived alone in a clean apartment in the Fushimi ward and who had clearly been crying before she arrived and had composed herself in the car. She showed him the spare room — small, plain, a window that looked onto the grey concrete of the adjacent building's wall — and told him he could stay as long as he needed and that she would leave him alone when he needed that too.
He thanked her.
He sat on the edge of the spare bed, bag still on his shoulder, and looked at his hands.
They were shaking. He hadn't noticed until this moment. The tremor was slight — the hands of someone whose body was processing something the mind had chosen to hold at a measured distance. He pressed his palms flat against his thighs. Breathed in through his nose, slow and steady, four counts. Out through the mouth, four counts. The way his father had taught him when he was ten and had come home from school with the aftermath of something difficult written across his face and Setsuna had sat beside him on this same kind of bed in a different room and said — when something is too large for the body, you give the body something small to do. You give it the breath. The rest follows.
The rest did not follow.
Outside the window the grey wall of the adjacent building was turning darker as the evening came in. A crow landed on a pipe fitting halfway up the wall, looked at nothing in particular, and left.
Kairo thought about the Soseki passage he hadn't finished annotating.
The narrator on the train. The letter in his hands. Understanding arriving too late, as it always did in the books that told the truth about things.
He lay down on the bed fully clothed.
He stared at the ceiling — plain white, no cracks — until it was too dark to see it.
He did not sleep.