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Good. His limiter is released...... David thought to himself. He knew that it was that huge explosion that really dealt the damage. It was time to up it a notch then.

"Particle Mirrors." Once again, another dual technique. The area around Ulquiorra shimmered, tiny little particles of a shiny metal appearing around him.

Earlier, when his hand had glowed, David had been moving more and more moisture to Ulquiorra's location. The moisture would have gotten around, and even in, Ulquiorra. It got inside of him through the nose canals. This moisture had split into it's two elements of Hydrogen and Oxygen.

David snapped his fingers, and a spark flew. The air all around Ulquiorra ignited, sending out a small roar and shockwave. Nothing too significant. But then it would become hotter, growing at an exponential rate. David was concentrating the heat into plasma with the enchantment on his gloves. This continued for about a second, causing the temperature to rise to, and above, 24000 degrees Celsius.

At the same time, David made more ice lenses and mirrors, creating more light. The light contributed to the heat, by having it's heat stripped away and concentrated into the explosion. This brought it to 240,000 degrees Celsius, due to the large amount of light and heat created from the explosion.

Then the Particle Mirrors took effect. This increased the heat exponentially. The Particle Mirrors were taking the energy, increasing it, then reflecting it back. This would bring it to about 240,000,000 degrees Kelvin.

And, as usual, this was not the end of the attack.

Black particles formed around the explosion while it was being affected by the Particle Mirrors. The resulting light energy from the plasma was being absorbed by the particles. This was an ability of the late Kiriel, the large black claymore David had had earlier. It was able to absorb light, heat, and electricity. Now, due to one of the armors magical techniques, it was converting that stored energy into magical energy. The black particles then shot that magical energy back in, creating more light and heat.

This attack did not stop. It would sit there and would continue to grow.

The armor particles surrounding Ulquiorra's Leg would tighten, applying pressure from all sides. This would halt his movement. At the same time, David leaped to his left side, putting distance between Ulquiorra and him one again. He rolled slightly, turning all the while. He pushed of the ground, bringing him to an upright position. David did not break his forward movement, but simply continued it with a stride. He pivoted and face Ulquiorra. His cloud had followed him again, the particles around Ulquiorra's leg leaving only after David was in the clear of Ulquiorra's limiter.

"..." David giant ball of heat and energy was still growing in power.

David took this moment to release part of his energy, increasing his powers and such. It was not often that he did this. But, he that if he didn't, there was no way that he would be able to continue to keep up with Ulquiorra.

A tiny rift opened up in the increasingly powerful ball of energy in the room, shooting out a beam of incredibly intense heat at Ulquiorra's midsection. Even though this was only a margin of the sphere's total heat, it was still several hundred thousand degrees Celsius hot.

David emerged from his cloud as the heat beam shot at Ulquiorra, running quickly at him. There was a crack and a boom, and David was behind him, his black claymore shooting at the back of Ulquiorra's head. His sword also made a boom of it's own, taking milliseconds to follow after it. His sword and arm would seem to be in one place at one moment, and the end of his stab at another moment.

(Sorry for not posting for such a long time. I was busy with a mob of tests to study for. )
(Also, you didn't really specify which side Ulquiorra appeared on. I'm assuming the side with the black claymore, since that is the biggest opening right now. Also, I'm not quite sure on what kind of kick it is.)
David's other blade cracked, a streak of white shooting at his lower chest, and going under David's arm. Ulquiorra would be forced to move and stop his kick, unless he wanted a sword in him.

"And don't assume that I can't keep up with you." David replied, letting go of the white claymore with his left hand. His arm making the exact boom Ulquiorra's leg was. He brought his forearm up above his head, so that the tendon, right before Ulquiorra's heel, hit his forearm. David let go of the black claymore, tensing his legs all the while. He pushed off of the ground, letting Ulquiorra fall back to the ground. He shot backwards. Once out of the limiters range, a large beam of energy shot at the Ulquiorra's, at a staggering height of 50 ft.

David's claymores flashed, then exploded. The heat and force would be intense.

After exploding, and going back to their feather form, they began to swirl around the Ulquiorra's.

Another arc of heat energy, from the still growing orb, shot into the feathers, equaling the height of David's energy blast.

David's cloud of particles formed around him once again.

David was not surprised at all.

A portion of the particles formed a wall behind him, the shards of the cross bouncing off of it. Then, David's barrier exploded into large particles, but these were more like tiny little knives. They shot at Ulquiorra's back.

(These knives would be similar to those little things Grimmjow shoots. And just about as fast and powerful.)

Ulquiorra underestimated the amount of energy he had. It would be wrong to say that he was more powerful that Ulquiorra. It was more of that he was able to store more energy. David had developed a special technique of compressing energy. By compressing all of his energy to one location, he left more space for energy to be restored. He compressed his energy so much, that his energy actually went far below normal. Unfortunately, one drawback of this is that, with a lack of energy, all of his abilities, senses, movement, and pretty much everything else, were dampened. If Ulquiorra had noticed his energy levels rise earlier, then Ulquiorra would notice all of his other abilities rise. But, David was only at what his normal state of being would have been. Now, as for that energy compressing technique, after so long, he would have a massive reserve of energy. The more energy released into his body, the further his abilities were increased.

But, it would be wrong to assume that David only had one reserve on energy.

This, and more, was what David's energy control amounted to.

David had energy reserves in his arms, both legs, and a main one in his chest. These were for emergencies. He always keept them on the edge of being released, so that there would be near to no delay in activating them.

The one on his right exploded open, increasing the his overall energy levels, as well as increasing the amount of energy in his arm especially.

David's arm shot at Ulquiorra's right hand at a slightly faster speed. His arm, shooting at a diagonal angle, would intercept Ulquiorra's hand mid course, hitting his wrist. This would cause Ulquiorra's arm to miss it's target and take sever damage.

While he did this, David released some some of the energy from his chest storage, evening out the rest of his energy with his the energy of his arm. David's increase in energy was just about equal, but slightly more, than Ulquiorra's.

But David still had more where that came from. Much much more.

"Tch." That was annoying. There was no way for him to keep up with Ulquiorra at close range, unless he used his cloud of particles.

David hopped back as well, now quite a deal farther from Ulquiorra's limiter area of effect.

His ball of energy was still growing larger and large in it's position. There was no telling how much energy was in it, only that it intensely powerful, and could probably incinerate them both.

David's armor cloud began to expand more, creating more of those knife like things. But, they were bigger, about the size of a fist now. These were 10 times more powerful than the last, and were amazingly destructive.

Dozens of these knives shot at Ulquiorra, creating a huge boom when they uniformly pierced the sound barrier and shot through it. They formed a large wall of spikes, threatening to engulf Ulquiorra and blow him to bits.