Set in the historical Kisaragi City, the story follows a town plagued by mysteries ranging from small mishaps to murders, with no logical explanation for why these events occur.

It is believed that Silent, a worm born through hate and sadness, has infected humans and driven them to commit atrocious crimes. Atsuki’s parents were victims of these crimes.

Seeking revenge, Atsuki undergoes a dangerous operation to acquire Lux-Pain in his left arm. When he uses this power, his right eye turns golden as he searches for Silent and tries to destroy it.