In the process of investigating Director Shindou's murder, Nishinosono and Saikawa learn the details of Shiki's multiple personalities and the murder of her parents that took place 15 years ago. The two of them try to figure out what she was thinking in order to find a clue.  In doing so, Nishinosono is forced to confront her own past.
we try to unify into one personality
 without contradictions,
،نحاول التوحد إلى شخصية واحدة بلا تناقضات
bringt man alles auf einen Nenner
si fa in modo di unificarle in una sola
personalità senza contraddizioni.