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".
But those little kids are risking 
their lives and working really hard.
ذلكما الصغيران يخاطران بحياتهما
ويعملان بجدّ حقّاً
Dieser junge Kerl gibt alles
und setzt sein Leben aufs Spiel.
al ver a esos chicos esforzándose
y jugándose la vida,
al ver a esos chicos esforzándose
y jugándose la vida,
Mais de l’autre, ces jeunots
se battent au péril de leur vie.
ma quei ragazzini ce la stanno 
mettendo davvero tutta a rischio della vita.
Mas aquelas crianças estão arriscando
 suas vidas e se esforçando bastante.