The final battle takes place in the Hikariwo theater, where Takuru is trapped in a sightless and soundless prison in his own mind.  He'll need Onoe's help to break free, but after what he knows about her, can he bring himself to ask for it?
Only the me on the other side knows that.
وحدي أنا التي في الطرف الآخر تعلم ذلك
Nur mein Ich auf der
anderen Seite weiß das.
Solo sé cosas de mi otra yo.
Solo sé cosas de mi otra yo.
Seule l’autre moi peut savoir ça.
Conosco solo la me dall'altra parte!
Só a Serika do outro
 lado sabe disso.