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.
A tool to free oneself.
.أداة للحرية
Ein Werkzeug für die Freiheit.
Es una herramienta para liberarte.
Es una herramienta para liberarte.
Un outil pour vous rendre libre.
È uno strumento per la libertà.
Uma ferramenta para 
obter a sua liberdade.