☁︎︎ Third POV

Y/n was back, he was alive and right in front of the pillars, but he looked so different. His stance was staggering, his eyes were completely dull, it looked like he hasn't slept in days as his hair was unkept. Compared to the Y/n the pillars knew from the start, to the Y/n now, there was a major difference.

Muzan visibly gritted his teeth as he clutched his fist, "Get out of here Y/n! I told you to stay put didn't I?!" He shouted, making some slayers confused.

Muzan's anger was clearly shown to everyone. His bloodlust was suffocating. The pillars realized just how powerful Muzan's bloodlust was, they never stood a chance in the first place because of it. None of their bloodlust could even compete with Muzan's.

"Y/n, step away from the battlefield!!" Muzan yelled, "I don't want to hurt you! I don't want to fight you!! You're making a mistake, damnit!! Why can't you just stay in place for one moment!?!"

Y/n said nothing, he kept the blank look on his face as he slowly made his way towards Muzan. He said nothing and did nothing other than slowly closed the gap that stood between Muzan and him. His eyes were focused on Muzan, and Muzan only, like a predator targeting a prey.

Muzan gritted his teeth. If Y/n wasn't going to listen to him, he will make him listen. Muzan raised his hands and sent tendrils towards Y/n. They were fast and they were constantly trying to grab onto Y/n, however they failed.

In a blink of an eye, faster than the other slayers could comprehend, faster than what the pillars had expected, Y/n had dodged, cut up and immobilized the tendrils. It all happened so fast that the tendrils haven't even regenerated yet.

Cut up pieces of flesh lingered on the dusty ground as only one tendril remained. But the last tendril was immortalized, having being stuck to the ground since Y/n pushed it down with such force.

Muzan's eyes widened as he just realized that his tendrils were useless. A shadow casted over Muzan as his gaze remained up. Y/n stood above him, standing and balancing on the tendril. His blade against Muzan's neck.

"Ha... Haha... AHAHAHAHHAA!!" Y/n laughed, "THAT WAS SO EASY!!"

A heavy sense of bloodlust hit everyone like a bullet to the head. The bloodlust was agonizing, yet sad to some extent, but it could very much rival Muzan's bloodlust. Everyone trembled at the blanket of bloodlust filling the air, even Muzan was shaking a bit.

Y/n's eyes were wide like he was a psychopath. He smiled horrorifingly as it almost split his whole face. It looked like he had gone insane, he had finally snapped after three long years of suffering and trauma.

Muzan furrowed his brows as his eyes were still wide, "Y/n..." He muttered.

Y/n still continued to laugh, "I'VE FUCKING LOST IT, MUZAN!! You've successfully driven me insane!! Are you happy now?!! Do you feel proud of yourself?!!? I'm not going to sit back anymore, Muzan!! I'm gonna fucking kill you, I'm gonna slaughter you, you fucking demon shit!!"

Dark (f/c) clouds appeared on Y/n's pale, unhealthy skin. His demon slayer mark has appeared, but, for some reason, it made everyone else uncomfortable because of the way Y/n obtained it.

Muzan scowled in disgust, "You are not my Y/n. You look and act nothing like him."

"If you can't handle me at my worse," Y/n raised his blade then brought it down to cut Muzan in half, "YOU DON'T DESERVE ME AT MY BEST!!"

Muzan quickly unstucked his tendril and used it to make Y/n fall from unbalance. He knocked Y/n away from him as he started to regenerate his tendrils so that he could fight better.

Y/n slid away, using his blade to stop himself. He looked up with an insane smile as the color in his eyes were no where to be seen. He pushed himself off from the ground and jumped, to avoid the tendril coming after him.

"Breath of Clouds, Second Form: Swift Cirrus!"

Y/n ran towards Muzan, but he couldn't get close enough since the demon's tendrils kept him away. He cut all the tendrils in half and ran up to Muzan without a second thought, laughing as he did so.

"Why are you knocking me away, Muzan?!?!" Y/n shouted, "Come!! Fight me properly, damnit!! You call yourself the king of demons, no?? Then fight me!!"

Muzan gritted his teeth, surprised that Y/n could keep up with his speed. Y/n was dangerous, Muzan knew that, but he never knew that Y/n could be this dangerous. At this rate, Y/n will be able to keep him out till sunrise.

Y/n let out a small laugh as his smile seemingly gotten wider. He ran towards Muzan once again, cutting up and dodging the tendrils set his way. He raised his blade once he was close enough to Muzan and started to cut away at his flesh.

Muzan hissed in anger as he put his arms up to protect himself. Y/n's slashes did nothing to him, but there was so many and so fast it was useless to try and block them.

Y/n slashed at Muzan at all sides, not giving himself or the demon anytime to breathe. He couldn't help but laugh a bit to himself seeing Muzan unable to track him down. He slid to a stop as he was crouched down.

"Seventh Form: Mystic Clouds."

Y/n ran at Muzan at full speed. Muzan reached his hand out to Y/n, wanting to grab his head and crush it. However, his hand went right through Y/n as he disappeared into a cloud.

The white cloud wrapped itself around Muzan, causing him to groan in annoyance. Y/n appeared from side to side slashing at Muzan's vital points, even almost cutting off one of his limbs.

However, Muzan grabbed Y/n's neck and threw him away. Y/n crashed into some debris, creating a small dust cloud where he landed. Muzan only narrowed his eyes, keeping his guard up as he knew that that wasn't enough to stop Y/n.

"Third Form: Multiple Altostratus."

Slashes of clouds appeared from the dust cloud, aiming themselves straight at Muzan. Muzan's eyes widened as he moved his head to the side, avoiding one of the slashes. He used his tendrils to block out the rest from reaching him.

Y/n appeared from the dust clouds, his whipped the blood from the corner of his mouth as he smirked. He spun and played with his katana before running at Muzan again.

Muzan noticed Y/n coming after him and raised his forearm to block his attacks. Muzan continued to step back as Y/n's blade clashed with him over and over again. The blade was lighter than normal blades so it was easier to make quick attacks with.

However, with a lighter blade, it was easier to lose your grip on it. Muzan took this into account and quickly knocked Y/n's blade out of his hands. The blade stabbed the ground in front of the frozen pillars, who couldn't move because of the heavy bloodlust.

"Y/N!!" Giyuu shouted in worry as he was the only one who snapped out of his state of shock.

Muzan smirked down at Y/n. However, Y/n only smiled back at him, making him confused for a second. A kick to the temple shocked Muzan. Another kick was aimed at him in the stomach, causing him to stumble backwards.

Although Y/n may not be as strong as he wants to in his arms, he had powerful legs. He kicked Sanemi and Uzui away for god sakes, he crushed demons' heads by simply stepping on them when he was younger, so he can definitely hold his own with or without a a blade.

Y/n used a hooked kick at the other side of Muzan's head. He than jumped up and kicked Muzan two more times. He took advantage of Muzan's stunned state and kicked him in the chest and stomach, knocking him down.

Muzan coughed up some saliva as he was knocked down. Y/n's attacks were too sudden, too fast, even though he didn't have a blade it was almost like he became fast. Y/n's attacks, although they were weaker, were constant and light.

Y/n smiled as he quickly raised his leg for an axe kick. But before he could bring it down, Muzan's tendrils threw Y/n away by wrapping around his waist and throwing him into debris near the pillars.

"Y/N!!" The pillar shouted, all of them snapping out of their state of shock.

Y/n staggered to stand up straight as he breathed a bit heavily. He held onto his arm but he still had that crappy smile on his face.

"What are you wait for...?" Y/n asks as he grabbed his katana with his hurt arm, "Standing there like idiots. This is a fucking war, you don't sit back and watch, you fight. Who cares if it's life or death? Fight till the very end, damnit." He let out a small chuckle, "And that's what I'm going to do."

The pillars clutched their wounded limbs as their katana. Some of them had a memory go across their minds about all the people they have lost due to Muzan. All of their eyes sharpened in anger.

Y/n noticed the change of wavelength in everyone's auras, he smiled wickedly, "That's the spirit. You have bubbled up anger? Let it all out here. Let the blood rain. Give Muzan the lesson that he needs to learn. Let him repay the fallen's blood with his own blood.

"Let's murder Muzan, since he murdered so many of our~" Y/n laughed out.

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