After the battle with Envy, the rest of the battles were quick for Karna. It seemed like the demons were not idiots and had decided that sending the rest of the demons one by one would only lead to their demise. So other than Pride and Wrath, Karna faced the rest of the seven deadly sins.
"Lust, Sloth, Gluttony, and Greed," Karna called out the names of the sins currently in front of him.
Each one of them was horrifying in different ways. Karna was able to feel each one of their energies trying to influence him in one way or another. Envy had the power to trap his enemies in illusions that made them live in dreams where they acquired the wealth and anything they were envious of seeing others achieve.
But since Karna was always looking forward while achieving everything he had set out to do, he had no reason to be envious of what others had.
Right now, facing the other sins, Karna was able to feel their powers trying to affect him. He also felt that the darkness around him had increased in density and that the area being lit up by the soul lamp had decreased by a lot. But even then, the area lit up was more than enough for him to see who he needed to attack.
Plus, it seemed like the lack of eyes had made them unable to see how much area was visible to Karna. Because of their inability to see the range of the soul lamp, they were unable to take advantage of it.
Karna looked at each of the sins and was able to carefully feel the effects of their auras on him. Sloth was making him feel extreme sleepiness and the desire to lie on the ground to rest. Gluttony was making him feel like going back and killing a lot of people so as to feed on the energy of death released when they died.
Feeling both of these powers trying to influence him, Karna was reminded of the demon of Zeref with similar powers to Sloth and Gluttony.
'Seems like this will be perfect practice for when I meet him in the future,' Karna thought as he felt the effects of the other two.
Greed was making him have thoughts about taking back all the plans he had made to make his guildmates stronger and using them himself so as to become strong alone.
Meanwhile, Lust was giving him visions of Cana along with a few other girls in his life. He really wanted to shut it down, as he felt that was dangerous territory.
All of these attacks had created real tension on Karna's mental strength, but all of them pushing in different directions had actually helped make sure that his mind remained strong. He then tried to use his magical aura while channelling the emotions of anger he had felt when he faced the child traffickers in his earlier missions.
Suddenly, he felt like their influence was not as strong as it had been moments ago. And from the expressions of the demons, who suddenly took a step back, Karna knew they also felt the effects of his extremely dense magical aura that he had kept hidden most of the time.
"Well, time to take all of you down," Karna muttered as thick gauntlets made of the energy of death appeared on his arms, while large whip-like claws began to manifest from his back as well.
"I have never tested this before, so you can feel honoured by it, I suppose," Karna said as he suddenly vanished from the creatures' senses.
"LUST, DODGE!" Greed screamed as he sensed where Karna was appearing. But it was too late, as Karna smashed Lust straight into the walls while injecting death energy into her.
"Ah, looks like it works," Karna muttered as he turned towards the others. "You guys can only feel your enemies by sensing their location through the darkness, but if someone manages to blend into it, you can't see them at all, right?" Karna asked as he used the aura nullification of his death demon slayer form.
The demons started sweating as they realised they were essentially going blind in the current battle to the death.
The rest of the battle could only be described as a one-sided massacre. The demons who had led to the destruction of the ancient magical world were used as punching bags by Karna, who began to test the limits of the death demon slayer form on them.
Karna figured out that unless he directly injected the essence of death into their bodies, these creatures were essentially immortal. So Karna began to use this opportunity to create and test out many of his weapons that he had never used before.
Within minutes, Karna wiped out all four of the deadly sins and absorbed the darkness within the seal that was under their control. As he did, he felt the illusion power he had absorbed from Envy strengthening even more. But this time it added the additional manipulative powers of the deadly sins he had killed.
So now every time he used the death demon slayer attacks, the opponent would be racked with illusions of the achievements he wanted to accomplish, along with being heavily influenced by lust, gluttony, greed, and sloth—a terrible combination when he thought about it right then.
"Well, five down. I guess two more remain," Karna muttered as he began walking inward.
Inside the seal.
"Seems like the person who came was strong enough to wipe us out, I suppose," Pride muttered as he was able to sense everything that happened.
"He hasn't reached the level of the fate breaker who defeated us millennia ago, but the chances of this kid surpassing him in the future are very high," Wrath muttered as he stood up.
"How much has your power grown since all five of them died?" Pride asked as he manipulated the spell.
"Enough," Wrath answered as he went ahead.
A/N- hope you like it .