Several minutes earlier, the Teleryan Pass.
When the demon army entered the Teleryan Pass, they didn't see anything suspicious at first and only when they were in the middle of the road, suddenly the commander of the army from the Golden-Horned Demon Tribe started looking around when he noticed something was wrong and when he realized it... it was too late.
"We fell..."
He didn't get to finish his words because he was thrown away from the lion-type magical beast he was riding.
Only then he realized that this place was full of Spell Holding Wards; there were tens of them and all of them were activated at the same time. A whole bunch of explosions happened at the same time, as several of the Magic Spells, which the commander of the Golden-Horned Demon Tribe didn't recognize, were released from the Spell Holding Wards as the explosions killed hundreds upon hundreds of demons.