She is a person who has just lost her memory. She has a sense of time travel, but it is different from amnesia. She has become a killer and a double spy in the dark. Surprisingly, the mastermind behind the scenes had a big accident and it was not an accident. In other words, by accident, the key to working during the day and staying up late at night to continue working was turned on.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.