As soon as high school student Jiang Pan received a signed letter from a writer from a mysterious person, she fell into a time and space loop on the day of the appointment. She had to uncover the identity of the letter's owner and the truth about the loop, but found that she had already been a part of this Mobius strip.
The secret love object who transferred to another school and left, two similar faces, what kind of mystery will be revealed at the end of these cycles.
Intent: The end of all time and space cycles is the reunion of the brave