A female high school student fell mysteriously from a building, but the school closed the case hastily because the deceased's mobile phone was confiscated and she couldn't figure it out for the moment.
I thought that was the end of the matter. Unexpectedly, a year later, the arrival of a transfer student once again brought this matter to the forefront.
What is the truth of the matter?
Will the buried truth ever be revealed to the public?
This story is purely fictitious, and none of the characters in the book have prototypes.
Mission: The truth will be revealed one day