Two Tricks
A sword light, holding an enormous amount of sword energy. This sword energy was neither fast nor slow but everything around it seems to be stopped. Nothing was moving around, nothing can move, only sword energy flew through the body of the fire dragon.
But it didn't stop, nor could it be stopped. It flew towards the demon, trying to slice him. But the demon couldn't move as if his feet are glued to the ground.
"Splash" Sword energy cut the outer skin of the demon and slowly disintegrates. The red blood of the demon splash on the ground. Only then, everything seems to be moving. The demon had cold sweat on his forehead. He saw this coming but couldn't dodge, nor counterattack. His only option was to believe in his own attack.