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An otaku was killed by an inexplicable force by chance. When he woke up, he came to a continent in the human world. I wanted to spend my life alone, but unexpectedly I was chased by a group of human immortals. What is the red moon on the 15th of every month? What was that huge black hand in the first year of junior high school? Why did the Human Immortal Lord die inexplicably? No one knows, and those who know are already dead...