Rean and Roan were right. The Zasfin's Saint Realm expert, Jare, was surprised to see how the twins passed by the defense line without anyone noticing. However, he saw how they were being pursued by the Zasfins that lost them at first, which meant that they could see the twins. Of course, it didn't take long for the Nascent Soul Realm Zasfins to receive the order to retreat since they were being lured way too far from the formations. It might be a trick by the demon beasts, so they had to go back to protect the others.
Rean and Roan didn't mind either case, though. After all, they were much faster, so they would still leave them behind easily even if they kept following. Jare, of course, still had the twins within the scope of his Spiritual Sense. Nevertheless, that wasn't the only front where battles were ongoing. He had to give orders to the rest as well.