Whispers in depths of heart...
"The human soul is composed of pain."，
Inexpressible sorrow...
Unseen tenderness, a love that should have no substance, transformed into invisible pain that pierced heart with ferocity.
Because of this, life flows, cycles endlessly...
...A boy, born without knowing pain within his heart, named Haruna Tsubaki, lived his days erasing malice he harbored towards his only sister, one by one.，
In this increasingly monotonous life, he met a girl who cleverly c oncealed herself, a silent doll-like girl named Chizuru Kikukawa...
The boy who had grown tired of life encountered pain for first time, piercing his heart.，
In space where dead and living intertwine, shrouded in twilight, re stood an apartment named "Mumon-so" that had stood re for a long time...
...
The boy and girl lived toger, fighting against strange curse called "Curse"...，
Understanding heart y had never known, y grew stronger...，
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