Ryuen Kakeru sat at the desk in his dorm room, staring at the notebook spread open before him. It wasn't a computer or a terminal, but an actual paper notebook. Notebooks like this were common in the White Room: they couldn't be accessed remotely or erased without a trace, and every mark faithfully recorded the history of every change. He had held this pose for nearly an hour, a pen uncapped between his fingers, its nib hovering half an inch above the page, unable to come down.
Outside the window, dusk was settling in. The late-May evening cast its last band of orange light across the gray walls. From below came the sounds of students kicking a ball and the clink of change from a vending machine. Everything seemed as ordinary as any Saturday evening. But he knew this one wasn't ordinary. His phone had just received two messages from different people, and their contents were almost identical.
The first was from Horikita Suzune. No signature, no greeting, just a single line: "At next week's regular Disciplinary Committee meeting, three cross-class disputes from last semester will be reviewed. Your name is on the witness list, not the defendant list." The second was from Kushida Kikyo. Her tone was much gentler, but the message was essentially the same: "Ryuen, I heard the committee is reopening those cases from last semester. If you need me to testify, I'm here. After all, we put together the materials for the investigation back then. You told me they were true."
They were true. She had said only those five words, but they had struck the same nerve like five precisely placed needles. She was the one who had helped him forge testimony. She was the one who had "volunteered to assist" at every crucial moment. She was the one who had gotten Manabe to film the shoving outside the Equipment Room. And now she could appear as a witness and calmly present her account to the committee chair.
He set down the pen. Its barrel tapped lightly against the desk. The cards Kushida held weren't the sharpest, but they were the most precisely aimed. She knew he still had Sudo's video, but she was also implying: You have something on me, and I have something on you. We're both accomplices. But there was a subtle difference between them: she had never signed her name to any of the forged materials. He had.
He turned to a fresh page and wrote two characters on the first line: Kushida. Then he drew three lines beneath them. Beside the first, labeled "Perjury accomplice," he put a question mark. He had signed his name, but traces of her role in organizing all the materials as an assistant hadn't been completely erased. How far they could be traced depended on how much of the record had been retained. The second line was labeled "Manabe's footage," with another question mark. The chain of permissions for her temporary transfer from Class C and the device number of Manabe's phone were both on record. It depended on whether Manabe dared to testify. The third line was labeled "Horikita's trump card," with yet another question mark. Horikita certainly had more evidence, but she had sent him a witness notice instead of a defendant notice. That meant she was still giving him room, waiting for him to decide where he stood.
He stared at the three lines for a long time. Then, at the bottom of the page, he wrote: "Tomorrow's committee meeting. Witness stand. Ishizaki should go, but Manabe won't." When he finished, he put down his pen, closed the notebook, and opened the window to let in the evening breeze, carrying the grassy smell of the field. A few younger students were playing soccer. The ball rolled onto the track, and no one went to retrieve it. Their long shadows stretched toward the white line, drawn out by the slanting sunlight. Ishizaki used to play soccer there, too. He used to believe that doing Ryuen's bidding would earn him a starting spot. Ryuen stood at the window for a long time, then put the notebook back in the drawer.
He realized he was on a long downhill path, from the Old School Building to the gym, from forging witness testimony to bribing third-years. At this crossroads, he could still turn back.
At ten on Sunday night, Shiina Hiyori pushed open the door to the Library's staff room. She had just finished the usual weekend inventory, shelving the last cart of returned books by their call numbers. The lights in the staff room were still on. Three monitors stood side by side, and the middle one displayed the Old System index she was updating. When she reached the desk, she noticed something beside the keyboard: an old, copper-green key resting on a sticky note. The note was blank except for a simple pencil drawing: a book, with a tiny shield on its spine.
She recognized the key. It belonged to the archive room on the third floor of the Old School Building and had once been lent to Kanzaki Toru. She had put it in her own drawer, but now it was on the staff-room desk instead. That meant someone had entered while she was away, taken the key from her drawer, and left it where she would see it. Nothing else had been touched. The shield was drawn in the private style she used in her Old System notes, a mark that had appeared only in one encrypted note she'd shared with Kanzaki and Horikita.
She picked up the key and turned it over. A tiny label was stuck to the end of its handle. It bore the Library's barcode, which, when scanned, would lead to the call number of a particular book. She scanned it with her phone. The barcode didn't point to a book, but to an old file that had been moved to a backup server: <Summary of Disciplinary Committee Recusal Applications>. The page was blank except for a search box. She entered Ryuen Kakeru's name, but nothing came up. Then she entered Kushida Kikyo. The screen flickered, and a line of text appeared: One record had been marked for manual approval before migration. Search date: the day of the committee's first regular meeting last semester. Operator: Mailroom Logistics Team substitute. In the notes field, handwritten: "Not to be disclosed for now, at the individual's request—confirmed by assisting person present."
She recognized the handwriting. It wasn't Ryuen's. It was the same as on the last index file Sakagami had signed before retiring. But the signature box at the end of the file contained the confirmation of another assistant, too. Enlarged in high definition, the blurry blue mark seemed to show the shape of three characters.
The next day, Monday's evening sun cast long shadows through the blinds of the Student Council Office. Horikita Suzune straightened the record of Sudo's shoving that had been crookedly tucked into the supplementary Old System documents on Chabashira's desk. She placed it together with the complete set of operation logs Kanzaki had compiled and Shiina's index comparison report. Then she went over to the Disciplinary Committee and placed a copy of the timeline of every committee application Ryuen had made during his time at school faceup on top, with the profile photo of the server room Sakura had snapped on one side. No one saw when she put them there or how long she paused by the desk. Students passing through the hall only saw her come out through the door, carrying a can of black coffee that had gone completely cold. Her steps were as steady as ever.
She didn't include the signature marked "Not to be disclosed for now, at the individual's request—confirmed by assisting person present" in the public attachments. Instead, in the draft of her private notes, she set it alongside three handwritten documents from different periods and compared them with Kushida's. She locked the encrypted partition and sent Kanzaki Toru four words in a message: Handwriting matches. Then she closed her tablet.
At the same time, Kanzaki Toru turned off all the monitors at his dorm-room desk and leaned back in his chair, closing his eyes. In the darkness, the spine of the Illustrated Guide shimmered softly. A new annotation had appeared beneath Shiina's Silent Archive: "The key has been returned. She drew the shield herself." Karuizawa's Perception Resonance pulsed at low amplitude. The signal-to-noise ratio was unusually clean this late at night. She was sorting through the last batch of image backups in her hands with Sakura. Those photos no longer needed to be hidden away in encrypted folders. Sakura's Freeze the Moment did not light up that night. She no longer needed a shutter to confirm where she was. And behind them, a new name began to emerge at the end of the Illustrated Guide, its faint strokes not yet fully formed, but already leaving the first mark of ink.
There had once been a question in the White Room: When every name can be erased, how do you ensure the history you write won't be altered? The answer was to carve your name into more than one person's memory. Make the cost of erasing one name the erasure of everyone at once—and ensure that no one person could do it.
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