Secrets: Whispers of Notes

Lin Du traveled to the mysterious world and became Rowan Lin, a low-level clerk in the Backlund Archives Management Office. However, he discovered that he was not an ordinary time traveler, but an abnormal file registered in advance by a "non-existent Room 13". The black notebook in his hand will automatically write "marginal notes" to guide him to avoid death, and also push him step by step towards the truth about Tingen, the Backlund Great Smog, war, the end of the world, and the gaze of alien gods.