The head of the Exorcist Union is attacked by the Basara responsible for the the Dragon Spots. And the Twin Star Exorcists finally learn just where Sae came from.
And because of that, 
the barrier became unstable,
وبسبب ذلك أصبح الحاجز غير مستقر
Das hat die Barriere geschwächt,
La barrera se hizo inestable
debido a eso…
La barrera se hizo inestable
debido a eso…
La barrière est alors
devenue instable,
Per questo motivo, la barriera è diventata instabile
Por conta disso, a 
barreira ficou instável,
Из-за этого барьер стал нестабилен,