: A tag or file name used in file-sharing databases.

Kaito sat down. This was the secret of the room: it was a library of voices. For decades, people had come to N0299 to confess the things they couldn't say to the living. The recordings were never sold; they were simply kept, a collective memory of a city that was constantly rebuilding itself over its own past.

: An underground "memory library" in the heart of Shinjuku.

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