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.
I don't think any of us, as children, 
had only a single personality.
.لا أعتقد أنّ أيًا منا امتلك شخصيةً واحدة في طفولته
Als Kind wird niemand von uns
nur eine Persönlichkeit gehabt haben.
Dudo que cuando pequeños hubiésemos 
tenido una sola personalidad.
Dudo que, cuando somos pequeños, 
tengamos una sola personalidad.
Les enfants n’ont pas
de personnalité définie.
Credo che nessuno da bambino
 abbia una singola personalità.
Todos nós, quando éramos crianças,
 não tínhamos apenas uma personalidade.