Takuru is forced to confront his own involvement in the case, and the secrets of his past.  He was a neglected and abused child, who turned to an imaginary friend for support.  This decision has terrible consequences during the Shibuya Earthquake.
But why did you do something like that?
لكن لماذا فعلتُما شيئاً كهذا؟
Aber wieso habt ihr das getan?
¿Por qué fueron?
¿Por qué fuisteis?
Pourquoi vous avez fait ça ?
Ma perché l'avete fatto?
Mas por que vocês fariam isso?