The Other Winged Demon and Beast's Plan
With the winged demon dead, the rest of the demons were on the back foot. The other high-grade Tier IV demon was able to go toe-to-toe against Wolf and Shadow, but that was thanks to his explosiveness and incredible defense which, although difficult to overcome, was not going to help him forever.
Injuries had started appearing on his body as Shadow's fast attacks were simply too much for the demon to evade on a consistent basis while fighting against Wolf whom he deemed as a larger threat. With Wolf's sword, he was indeed the one with the strongest offense after Reign in his Nephilim form.
Each swing of his sword was enough to make the demon stay on his toes and do the best job he could in evading the attack. Thanks to the fact he fought unlike the other demons that Wolf and the others had gone up against, he was able to surprise them and take advantage of that, forcing Wolf and Shadow to go on the defensive for quite some time.