Time has passed since the incident at Magata Labs, and Saikawa and Nishinosono's daily life is returning.  Then one day, Shiki visits Saikawa at the university library..
Why did you do it?
لماذا قمتِ بفعل ذلك؟
Warum haben Sie das getan?
¿Por qué lo hiciste?
¿Por qué lo hiciste?
Pourquoi avez-vous
commis ce crime ?
Perché l'ha fatto?
Por que você fez 
uma coisa daquelas?