Blood

The person that grabbed Hiroto was the same one that he saved from the group of Demon's earlier, his body being severed in half as he and Hiroto crashed and rolled into the ground.

"GOOOO!!! CHAAARGE!! Get in front of them!!" A large group of Demon Slayers shouted, storming forwards towards Muzan. "Use your bodies as a wall to protect the Hashiras! At the very least we'll protect the swordsman who can stand against Muzan!!"

"You idiots!! Stop!" Hiroto shouted out towards the Demon Slayers, who ignored him and continued to surge forwards, getting cut down in the process.

"We were saved by the Hashira so many times up to now!! If it wasn't for them, we would've died a long time ago! Don't lose courage! FIIIIGHT!!" The group cried out as they charged forwards.

"STOOOOP!! Stop it, everyone!!" Mitsuri cried out, watching the Demon Slayers sacrifice themselves to halt Muzan's advance.

Hiroto was about to rush forward but then saw Tanjiro from the side of his eye fall forwards.

"Gagh!!" Blood escaped from his mouth, as Tanjiro tumbled on the ground, grasping his neck.

"Tanjiro!!" Hiroto yelled out, running towards him and grabbing him.

"Gh! Ugghhh!! Guaaaaahh…!!" Tanjiro grasped his neck, as Hiroto look at him in worry.

"Those who die right away are quite lucky. But even if they don't, getting wounded by me will spell their end. Just look over there." Muzan said, as the Hashira's turned to look at Tanjiro in Hiroto's arm, as a blob of flesh grew out of his right eye and blood flowed out of his mouth.

Hiroto's eyes clouded with tears as he kept shouting, "Tanjiro! Stay with me! It'll be alright! Tanjiro!!"

"It's useless," Muzan muttered, cutting a Demon Slayer into two. "My blood is infused into my attacks. But he won't become a Demon. It's too much blood. It'll work like a poison instead. It will destroy his cells, leading to his death."

Hiroto watched Tanjiro stop moving, as his eyes turned white.

"Kamado Tanjiro is dead," Muzan said emotionlessly.

Hiroto stared at Tanjiro's lifeless face, feeling as though the world around him crashed. "Tanjiro… How… Why… How can I ever face Nezuko again…" Hiroto cried, holding Tanjiro's head.

Biting his lips, blood flowed out of his mouth as he turned to Muzan, rage filling his eyes.

"MUZANN!!!!" Hiroto cried out, kicking off the ground and surging towards Muzan in a mere second and swinging his sword down.

*shik*

The spikes on Muzan's back were severed, as it fell onto the ground, not being able to regenerate.

"I'll kill you!! I'll kill you over and over again! I'll cut you into pieces and burn each of your hearts and brain one by one, making sure you suffer!" Hiroto yelled out, as blood flowed out of his eyes.

"Grahh! Curse you!" Muzan shouted as he felt the burning sensation on his back, reminding him of his loss against Yoriichi.

From his legs, Muzan grew out whips from his thighs, sending a sneak attack towards Hiroto's head.

'Dance of the Fire God, Dance'

Hiroto swung his sword downwards, cutting the spikes coming from behind him apart.

'Dance of the Fire God, Clear Blue Sky' Hiroto then spun his body forward, creating a 360-degree slash, deflecting against the spikes as Muzan backed off and threw more attacks forwards.

'Dance of the Fire God, Raging Sun' Hiroto unleashed two horizontal slashes, defending himself from Muzan's attack as he continued forward.

Muzan cried out and whipped his spikes forward with even more speed, launching attacks and sliced through the air.

'Dance of the Fire God, Fake Rainbow'

As the attack landed on Hiroto, Hiroto's disappeared, and appeared in front of Muzan, his eyes brimming with hatred.

'Dance of the Fire God, Fire Wheel'

While Muzan was still distracted from the afterimage, Hiroto lurched forward, swinging his sword downwards onto Muzan

"Just die like men, you obsessed freaks!!" Muzan cried out, sending out his spikes, causing the surrounding area to be destroyed, leaving large craters behind.

The other Hashira's dodged out of the way and pushed forward to support Hiroto, getting cut in the process.

*BOOM*

An iron ball crashed into Muzan, ripping the side off his body away, but then regenerating back once more.

"Himejima!" Mitsuri cried out.

"Sorry for being late," Gyomei replied, spinning the flail in his hands.

*shik*

From above Muzan, Sanemi cut through Muzan's head all the way down his body into two but then reattached itself in less than a second.

Sanemi's eyes were lifeless, as he pulled his sword back and threw several glass vials forward.

Muzan sliced through the vials, causing the liquid inside of it to splash onto him.

Jumping away, Sanemi lit a match and threw it onto Muzan, setting him on fire instantly.

"Graah!!" The fire died out, as Muzan growled towards Sanemi. "That's dirty."

"Well, it's perfect for the likes of you," Sanemi said, grinding his teeth. "I'll grind you into smithereens, punk-ass shithead."

The Hashira's pushed onwards but were halted in their advance as Muzan's attack increased in speed and power, pushing them back.

Uzui jumped down from the top of a building, launching his bombs to suppress Muzan's area of attack, giving the other Hashira's time to breathe and act.

Hiroto ran forward but was pushed back as a spike was launched towards him, cutting his arm as he dodged out of the way before it severed it completely.

From the side, Mitsuri was dodging even more attacks, but faltered, as she felt something pull her leg.

*SPLAT*

Her left arm and the side of her body was cut open, with her left ear being sliced off as well.

"Iguro!! Take her away!!" Hiroto shouted, running forward and deflecting the spikes that were aiming towards her neck.

Obanai pushed forward and grabbed Mitsuri, pulling her into an alleyway with other Demon Slayers as they tended to her.

'Dance of the Fire God, Burning Bones'

Hiroto jumped towards Muzan and performed a circular slash, defending himself from his strikes as he tried to get closer, cutting in the process as well.

'I'm losing too much blood, I need to hold on and push myself forward!' Hiroto thought, thrusting his sword forward.

'Dance of the Fire God, Sunflower Thrust'

Hiroto aimed his sword towards one of Muzan's hearts but missed as Muzan was able to shift their location around his body.

Muzan smiled and brought his hand down onto Hiroto's shoulder, crushing it and digging his claws into it.

"Grahh!!" Hiroto cried out, as he felt something being poured into his body.

"Hiroto!!" Giyu shouted, running forward.

"Let's see if you can survive from this much of my blood, I could use a Demon like you since you already killed off my top two subordinates." Muzan grinned wickedly.

Hiroto eyed Muzan down and said, "Not in your dreams." He then pulled out his wakizashi and swung it forward, cutting off Muzan's arm that held Hiroto in place.

"Arggh!!" Muzan cried out and was about to crush Hiroto's head when Giyu surged forward and grabbed Hiroto.

*BOOM*

The ground where Hiroto was exploded into pieces, as Muzan arm started to regenerate, but at a much slower pace than before...

"Push forward! Don't lose sight of the bigger picture!!" Gyomei shouted, throwing his flail forward.

"Murata! Take Hiroto away and treat him!" Giyu shouted, seeing Murata, a person from the same batch as Giyu.

Murata ran forward and picked Hiroto up, but Hiroto struggled in his arm and said, "I'm fine! I can still fight!"

"No! Get treated first! We can hold on until you're fit to fight again!" Gyomei shouted, dodging another one of Muzan's attacks.

Hiroto felt his shoulder burn, as the pain started to spread to the rest of his body.

"Agghhhh!!!" Hiroto cried out, kneeling over the ground from the pain that assaulted his body, digging his fingers into his own hands.

"Hiroto! What's happening to you!" Murata went over and started to drag Hiroto off to the side and behind some rubble.

From within the rubble, Yushiro appeared and his eyes widened, muttering, "Hiroto… not you too…"

"What? What's wrong with him?" Murata said anxiously.

Yushiro started to sweat, as he watched the Hashira's continue to fight against Muzan. "Muzan put his blood into Hiroto, a lot of it."

Murata paled. "Wait, doesn't that mean he'll turn into a Demon?"

"Whether he turns into a Demon is the least of our worries, we need to treat him so he can get back into the fight," Yushiro said, running forward to and taking a needle filled with a liquid, and injecting it into Hiroto.

Murata nodded and picked Tanjiro up as well, dragging the two Kamado brothers away.

Hiroto's eyes were still open, as he then gazed upon Tanjiro, seeing Yushiro sticking a needle into him as well. Yushiro continued, pulling out even more needles and injecting both Hiroto and Tanjiro with them.

As Hiroto was about to speak up, something in his body broke, as pain assaulted his entire body, causing him to convulse sporadically.

"Hold him down!!" Yushiro shouted to Murata and the other Demon Slayers around him, as they all piled onto Hiroto. Hiroto's body shook, as the Demon Slayers on him were thrown aside or knocked over.

"He's too strong! We can't hold him down!" Murata shouted, jumping onto Hiroto again.

"Graahhh!!" Hiroto yelled out, his teeth getting sharper as the wounds on his body began to heal at a rapid pace. The tips of his hair turning to a shade of purple.