Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
The main character, Takuya Arima, lost her mother in her childhood.
Her father, a historian, also died in an accident two months ago.
The last summer vacation of all high school students.
One day.
One day, a parcel containing a round mirror of no use and a strange object with a glass ball in it was delivered.
What does the enclosed letter say that my father is still alive!
"At 10 : 00 tonight, take this object and go to Kennomisaki (Mt. Misumi)"
As you proceed to the place, there was a mysterious woman lying down.
There was the principal of the school and a mysterious transfer student.
In a moment, the journey through the parallel world begins now.