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".
You can use these obstacles 
to stop our forward mobility.
يمكنُكم استخدام هذه العقبات لمنع مرونتنا في التقدُّم
Wenn Hindernisse im Weg sind,
werden unsere Vorwärtsbewegungen behindert.
Los obstáculos son una buena idea
para que redujéramos la velocidad.
Los obstáculos son una buena idea
para que redujéramos la velocidad.
Les obstacles réduisent
notre marge de manœuvre.
La presenza di ostacoli può limitare
 la nostra mobilità.
Você pode usar esses obstáculos
 para afetar a nossa mobilidade.