Sorry, I'm the behind-the-scenes boss passing by

— We are born of blood, we die of fire and sword.
From the day of birth, loneliness has been with us like a shadow, until death, until the return of life again.
Taste solitude, feel loneliness... But, it would be nice to have someone by your side.
……
"Hi, my name is Bai Baihai"
The Valkyrie who was covered in scars showed an ugly smile, and said his name to the red-haired girl.
A new story begins here.
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The prequel is over, and the first volume of the main story begins.By the way, please look at the prequel and the main story as the upper and lower parts.In addition, please read the prequel before reading the main story, and even if you are not good enough, you must read the volume [The End of the Prequel] and the following timetable, otherwise you may not understand it.