Three years after the strangeness happened, hundreds of thousands of people around the world disappeared out of thin air and never came back.
Everyone is afraid.
Only Lu Shiyuan was taking notes calmly.
Until he was pulled into a windowless library, twelve rules, twelve people, and only one way to survive.
While others are trembling, he is reasoning.
While others are running for their lives, he is tracing the origin of every clue.
When he touched the bloody note, everything that happened twenty-four hours ago appeared in front of his eyes——
"It turns out that the key to clearing the level has been hidden in the rules themselves from the beginning."
[Calm reasoning male protagonist × strange rules × infinite flow × hardcore puzzle solving]
