The rain in Tokyo always smells weird of rust. Under the doormat of the Mouri Detective Agency, one day there was a piece of yellowed paper with crooked rules carved on it with nails: "Conan cannot be allowed to wear glasses after midnight, otherwise he will see 'them'; if you hear Ayumi say 'let's play together' on a rainy day, you must run immediately and don't look back; when Kogoro Mouri is sleeping, you must not count his breaths..."
At first, everyone just thought it was a prank, until people who violated the rules began to disappear - Officer Takagi was not the last one to get out when the elevator was overweight, and no one has seen him since; the library administrator picked up the mystery novel on the floor and was found lying on the bookshelf the next day, clutching the book with missing pages in his hand.
Conan's glasses began to reflect light inexplicably, Haibara Ai's laboratory had a 49th contradictory rule, and Kaito Kidd's notice letter became a new taboo. When the rules began to modify themselves, the people in the mirror stopped blinking, and everyone realized: once this game bound by rules begins, there is no option to exit. And those who disappeared may have become part of the rules.
