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've answered that question many times.
.أجبت عن ذلك السؤال مراتٍ عديدة
Darauf habe ich schon
oft geantwortet.
Te lo he dicho muchas veces.
Te lo he dicho muchas veces.
J’ai déjà répondu à cette question.
Ho risposto a questa domanda
non so quante volte.
Eu já respondi essa 
pergunta inúmeras vezes.