[DeepL Translation - needs review] Volume 1 Introduction: In a world of black rain, a young girl named Pieta leads an ordinary life.
It is raining as usual, and she walks along the usual path to school,
She enjoys talking with her friend Danao.
Pieta, who is spending her time in such "as usual" life, feels happy in such "as usual" life,
She was happy with her "as usual" life.
She was supposed to be enjoying her conversation with Danae again that day.
But why? Why does Pieta remember today, y...
