Though Nial was not actually able to use any of the techniques he learned from the Late God of Darkness' memories, he could use altered versions of this Ten Thousand Nights use. Being a technique that was applied to his body and the armaments he wields, Nial was able to use his dark energy for the latter.
With a tremendous amount of dark energy and a shroud of crimson chaos that dulled the weapon, Nial didn't need to hold back anymore. He moved the rows of his opponents like the Grim Reaper. The only difference was that he didn't use a razor-sharp scythe but a dull sword to knock out his opponents, after disarming them.
Nial was sometimes forced to his arms, legs, and other parts of the Demihumans when they came too close in too large numbers to handle at the same time. He broke their arms and legs, which caused loud crackling noises to resound. Nial ignored these sounds mostly. He had to focus on the other sounds in his proximity, otherwise, he would be the next one to end up with a bunch of broken bones, and that was the best possible outcome.
Because Nial didn't really feel like dying, he used more than half of his accumulated dark energy inside the sword. The energy he used was more than most Mythician could hold as well. Thus, the longsword in his hands was much stronger, more dangerous, and more durable than the weapons held by the others.
It was still impossible for Nial to avoid sustaining injuries, no matter how much stronger he was physically, or how much more powerful his weapon was in comparison to the weapons wielded by the Demihumans. Every few seconds, a sharp sting reached his nervous system. He endured it well, though he was irked that he hadn't been able to block each of the incoming attacks.
Despite the frustration, the influence of his dark energy didn't increase all of a sudden. The dark energy was not even able to circulate through his body while they were still under the effect of the huge box, so how as it supposed to influence him, in the first place?
Nial ended up enduring sustaining more than six injuries before the battle ended with him being the sole winner. A few Demihumans were struggling to stay conscious but Nial deprived them of their struggle, knocking them out at last.
"I wonder if you guys were just ordinary guards at a high level, or if you're the Elite Unit of the Demihumans," Nial thought to himself, not sure what to think of the Demihumans. Since he was all by himself, it was not possible for dozens of Demihumans to attack him at the same time.
In fact, only two to three Demihumans could attack him simultaneously without restricting each other. Winning in a one versus three was not further difficult after he had gotten his hands on a good weapon which he had further enhanced with his dark energy and crimson chaos. At the end of the day, it was only logical that he came out victorious, but things had been difficult nonetheless.
The commotion around him had been highly distractive, preventing him from actually perceiving every single thing around him. He never fought a real life-and-death battle without his mana perception. Fighting blind and relying on his other senses while being in possession of superhuman strength was certainly not as funny or interesting as it sounded, especially when his other senses were struggling under the influence of various other things that influenced them drastically.
Now that the battle was over, Nial hoped that the huge box would disperse soon. In the meantime, he used his longsword as a replacement for a cane as he paved his way through the eerily silent unconscious bodies. He picked up everyone's weapon to make sure that nobody would be able to harm him even if they were to regain their consciousness before the huge box was to disperse.
A small stash of weapons formed next to Nial while he was trying to use his full physical strength even though he was not able to sense his surroundings. When he was fighting, he had a rough idea of where the others were and how far they were away. He could also gauge where the borders to the huge box were located. Nonetheless, Nial didn't move much in the whole battle.
He knew that he could be missing out on certain pieces of information, trip over someone's body, or smash against the walls of the box since he was not able to detect the finest details in his surrounding area. This irked him even more than the shallow injuries he had sustained. He had to take a deep breath and accept that he was not comfortable being completely blind, which included being deprived of his mana perception, and Mana Sense.
It was certainly uncomfortable but he had to adapt to it, since the Demihumans may not be the last opponents with similar means to fight him in the future.
'In the future, more people will attempt to kill me using a similar method. It's only a matter of time before I attain godhood and I will offend the first Gods… if I didn't do that already. Some will fear me enough to work on methods to kill me easily…and I am obviously blind, relying a lot on my Mana Sense and range of perception. Cutting off my energy and distorting the mana in his surroundings would be fatal the moment he was to fight a powerful opponent.
But even worse would be if his opponents were still able to use their abilities, and fight like the Heligav, with abilities and special traits that allowed them to disappear from reality, of course not literally.
'Looks like I have another hurdle to overcome,' Nial figured, understanding that he had to find a solution to this problem rather quickly. After all, his life was on the line.
Being blind was and has always been his Fatal Flaw. Countering it had been possible until now, but problems occurred once his way of countering the issues caused by his biggest flaw were forcefully interrupted or countered as well. Nial didn't even want to think about it but it was quite obvious that avoiding the bitter truth was not helpful.
With that in mind, he got to understand what he had to do in the near future. However, for now, Nial had to get out of the huge box. He removed the dulling effect created through the shroud of crimson chaos, took a deep breath, and unleashed the entire power stored inside the tip of the longsword.
The shroud of crimson chaos mantled and fused with the beam of dark energy that shot out of the tip of the longsword and it impacted a moment later.
The entire box began to shake violently but nothing happened for several seconds until the darkness beam dispersed. Nial thrust the longsword forward, piercing the crack he had heard before.
A crackling noise rang through Nial's ears and it was getting louder with time passing.
Nial also noticed that the influence of the huge box dispersed slowly.
'Finally…'