There was no single trace of guilt on David's face for what he was about to do.
Since he wouldn't be able to obtain the sacred domain for himself, he might as well make use of it.
"If you can't be mine, at least you will be useful to me." David muttered and in the blink of an eye, his figure once again appeared within the cave.
Recalling the amount of time that had passed, David frowned. Five days left. The sacred domain is very big, therefore five days would not be enough to suck all of the world essences and use to strengthen his body.
From the speed at which the technique vacuums energy, it would take at most two to three weeks to completely set the domain of its energy.
"Oh well, it should at least be enough to get my body to the tenth-star stage without activating my strengthening technique." David was ecstatic.
He calmed himself down and drank a full jug of blood. He sat cross-legged and controlled the blood energy over to his sore muscles and skin. They had been injured during the strengthening process therefore if he was to activate the technique once more, he would further the injuries and it might even turn permanent, unable to be healed even with blood.
Unless he had some miraculous pill or herbs. As David thought about herbs, his eyes twitched, but he stopped himself from thinking any further.
His body that was sore a moment ago started to heal at a rapid pace and in the blink of an eye, he had fully recovered.
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Recalling the technique, David started breathing according to the technique, his skin making a buzzing sound as a seemingly invincible hurricane appeared over his head, sucking in worldly life force and energies like a malevolent storm.
Whoosh!
The surrounding area around him started to wilt and dry up as though time was been accelerated by millions of years, decaying the land with the passing of time but it wasn't that time was passing, it was the heaven-defying technique that devoured everything around it to strengthen David's body in the process.
Time passed, David perspired rapidly, bathing the land with his fluids as he held on. Piercing pain stabbed at his flesh and organ, but David was already used to it as he clenched his fist and jaws tightly.
But as time went on, the pain started to increase even further, making David groan loudly, but he stubbornly continued to practice the technique even more.
Roughly the time it takes to service a Sky Cruiser, David gave up and fell to the ground with a flop. His muscles spammed and his body kept twitching like a fish out of water.
After a few minutes, he managed to regain control of his body and slowly stood up.
"This technique is something else." David smiled bitterly. Without a certain amount of willpower and an ability to withstand pain, one would be traumatised to even practice this technique after the first try.
Moreover, the pain only increases the further one practices the technique making others unable to practice it even if others get ahold of the technique.
David drank another full jug of blood, using the system he has used before, his body rapidly recovered, regenerating his sore body cells and even making them stronger. After which he continued to practice the technique with even more vigour.
He was already in a state of absolute focus. He would stop once he reached his limit and then drink a jug of blood, receiving his body and then continue to practice the technique.
Days passed by one after the other, the disciples around suddenly noticed the rapidly wilting of the land in that area that was spreading around rapidly. The once brown land filled with green grass had turned dark and lifeless like a true desolate land.
At first, the radius of the wilting area was so small it was unnoticeable. It wasn't after the decay expanded to a 5-kilometre radius before they started to notice it.
Some people had gone over to investigate but they soon realised that if they stayed in the area for too long, they would lose a year of their lifespan in 20 minutes. Terrified, no one dared to go near the area. To these geniuses, losing a year of their lifespan was inconceivable.
David maintained this repetitive action of practising, resting, drinking blood and then practising over and over and over again until suddenly, the pain increased by over a hundred times, making David tremble, his mind sizzle as though it was about to collapse. He immediately fell unconscious.
After a while of recovering, David woke up. He was confused. "What had happened? Why did the pain suddenly increase?"
It was then he saw the empty containers Pilling up to form a mountain around him. David smiled bitterly. There was no more blood, he had consumed them all.
David frowned. He needed more blood, otherwise, this precious opportunity called the sacred domain would go to waste just like that. He needed to find the disciples and drain them of their blood.
Placing his hands to the ground to help himself up.
"BOOM!!!"
The grounds collapsed like it was made up of glass and a fifty meter wide palm hole opened up in the shape of a palm print, as though a god had angrily slapped down from the heavens.
David froze and his eyes blinked rapidly. He couldn't have been so strong right?
The technique has improved his body strength and he could feel an immeasurable amount of strength coursing through his veins but it shouldn't have reached such an absurd level right.
Fifty meters wide was just too ridiculous. It was at that moment he spotted the decay of the ground and he sighed in relief. The land had already been weakened with its life-force drained for inky by David, it was no wonder it would collapse like that.
This wasn't his true strength, he needed to test himself to see how strong he had truly become in this short period of time and the disciples around would be the perfect test subject.