"Let's meet at the place where it all began." The true plot is revealed as Takuru travels to the Hikariwo. There he eets the other person behind the series of brutal killings.  But a deeper mystery lurks in the background: what Serika is telling him doesn't make sense, and he's convinced that as horrible as the story is, there's more to it than even he knows.
I was the one who killed your parents
at that evacuation center.
أنا من قتل والديك في مركز الإخلاء ذاك
fui yo la que mató
a tus padres en el refugio.
fui yo la que mató
a tus padres en el refugio.
c’est moi qui leur ai ôté la vie
ce jour-là, à leur refuge.
sono stata io a uccidere
i tuoi genitori alla zona di evacuazione.
fui eu quem matou seus pais 
naquele centro de evacuação.