After the battle inside the Ziggurat, Chizuru and Hayate are horrified to find out that their victory would have cost Koyori her life. They agree to help Tazuna and Koyori, even though they're out of the fight now.  They tell the two of them that in order not to be found in the real world, they need to come up with a name to use inside the Ziggurat when they fight.  After a bit of thought, Tazuna and Koyori's new name becomes "Single Gear".
I won't lie and say I'm not upset, 
but I'm not going to hate you for it.
لن أكذب وأقول أنّني لستُ منزعجة
لكنّني لن أكرهكما بسبب ذلك
Natürlich bin ich enttäuscht,
aber ich habe keinen Grund, euch zu hassen.
Aunque dé rabia,
no tenemos motivos para odiarlos.
Aunque dé rabia,
no tenemos motivos para odiarlos.
Anche se abbiamo dei rimpianti,
non abbiamo motivo di serbare rancore.
Não vou mentir e dizer que não fiquei irritada,
 mas também não vou te odiar por isso.