The Horned Demons' perception ability was not shabby. Before Du You could even make a move, these demons detected his presence and charged straight towards him. Behind him, the two women instinctively let out gasps of surprise.
It couldn't be helped. The strength of the Horned Demons far exceeded that of the two women and they moved too swiftly for them to keep track.
Of course, in comparison to Du You's perspective, these demons did not appear particularly fast. Following them were the actual fast-movers, the second-tier Horned Demons. With so many demons crowded together, they wouldn't be able to break free quite so easily.
With a single thought, Du You released a shield spell that could be mistaken for an unassuming block of black crystal. His magic blockade barricaded the entrance of the cave in an instant. The demons coming from the front were moving at full tilt and collided head-on into the shield.