Halo breathing tanjiro

Upper 3

 "I will never submit to the likes of Muzan and his demons. Tanjiro prepares to kill the demon  but it starts transforming into its true self."Gyoh Gyoh Gyoh." The demon then whispers "Blood demon art:Octopus pot of hell" Tentacles suddenly appear out of The pot next to the uppermoon and starts destroying the dark tunnel they were in. A few of the tentacles approach tanjiro  he jumps up to evade it and then slices two of them off.  'This demon is definitely the strongest I've fought, but it's not too overwhelming. This is perfect for my breathing style, I can use the debris around me that his last attack created to my advantage.  "Where are you slayer?" "Did you run from me after witnessing my divine strength!?!" Tanjiro silently jumps onto a chunk of large cement and jumps at him '12th form: Harps string'   Tanjiro jumps from the cement to the demon and lands his attack perfectly before converting to the next. '4th form:Broken Halo'  Tanjiro's attacks all land there mark and gyokko is split in half. His body goes into a pot and reappears at the other end of the tunnel.

"YOU COWARD....YOU RUN INSTEAD OF FIGHTING WITH HONOR. I AM ABSOLUTELY SHAMED TO BE THE SAME RACE AS YOU." Another demon with pure white skin, striped markings and shirt that only covered his abdomen, who also had unnaturally pink hair appeared.  

"Uppermoon three...." Tanjiro stares at the demon in shock. One of the strongest demons in existence was in his presence. The demon stares at tanjiro and grins. "You...your battle spirit is amazing. Become a demon, the limits of the human anatomy weaken you greatly, if you become a demon you will become stronger. You won't have to worry about becoming in.." Tanjiro lunges at the uppermoon with exceptional speed and goes for his neck, a smoldering heat behind it. "Die." Tanjiro almost makes it to the demons neck but he is blocked and Akaza punches him in the side sending him flying. "It's quite rude to interrupt someone's speech, don't you know any manners?"  The demon then gets into a fighting stance. "What's your name slayer?" "Tanjiro.." 

"I'm akaza, as I said become a demon, injuries heal at the blink of the eye and you can live forever." He offers once more, but he was met with a solid glare that shook his core. 

"No. If I become a demon I loose my humanity. Humanity is the greatest thing a human can have . Besides I wouldn't want some old ass man constantly reading my mind every three seconds." Tanjiro smiled at the last sentence. It had seemed to strike a nerve in the demon in front of him. Tanjiro unsheathed his sun blade and stared at akaza, looking for any signs of movement. Then a rat ran into the water setting both fighters off. Tanjiro swings his blade multiple times with akaza swiftly dodging them all. 

'Bda Annihilation Type'An explosive forward jump followed by a punch. Tanjiro dodgers the attack and jumps back trying to get out of akaza's range. But akaza was still on the attack. 'Crap' tanjiro  tries to use a breath form but he is punched in the side by akaza. "Well, I thought you were stron-" Akaza pulls his hand up to realize it was cleanly cut off. 

Halo breathing,12th form:Harps string. Tanjiro cut akaza's other hand of in a swift motion and is now facing his enemy face to face. "Heh, I take my words back. Are you a hashirs by any chance?" Tanjiro doesn't answer instead he puts his kitsune mask on. "Why.....Why do you kill humans." "Well I love to see the face they make before they die of course. The obvious answer is that we also need them for food." This was akaza's mistake.

Tanjiro's heart rate had increased to a level at which he should be dead but he was standing stil. The water around him started to boil.

Tanjiros scar had changed into a mark that resembled a flame covering all.  

'Sun breathing,First form:Dance' Tanjiro runs to Akaza and preforms on powerful attack. Aiming for his neck.

'W-what the hell. How'd he get so fast?" Tanjiro was half way into Akaza's neck before he sensed an attack.

'Bda War Style' Akaza punches in front of him, creating shockwaves that fly forward.

Tanjiro's dodges some of the shockwaves before eventually getting back in striking range. "Give me back my sword bastard."

He grabs his halo sword and begins to slash at akaza trying to find an opening. "You really are strong Tanjiro but I am here to remind you that upper 4 is also fighting with you." Tanjiro's eyes widen as a bubble consumes him completely. "Gyoh Gyoh Gyoh" Tanjiro stares at the two demon in disgust before smirking. 'Thank you for teaching me this skill kaasan' 

'Conservation breathing, strength increase.' Tanjiro's head is then covered with veins as he swings his blade in one strong motion. Popping the bubble. "You know. I should kill you before you become more of a pain." Tanjiro unsheathes his halo katana. '8th form:Halos illusion.'  He rushes to uppermoon 4 and managed to trick him with the feint cutting him into two. He then slices his head off ending the demons life. 

'Akaza....Listen to me. You need to run..NOW.' Akaza here's his masters voice in his head and complies. He dashes away but looks back to see tanjiro above him. 

"Where do you think your going?"

Akaza is kicked from the air into the water once again. He looks back and sees that Tanjiro's eyes were bleeding. 

'What the hell.' 

"I will ask you one more time....why do you kill"

'AKAZA GET OUT OF THERE. NOW" 

Akaza tries to run again but tanjiro slices his legs off. Before he could land the final blow a door opens up below him. "AGAIN...DAMMIT...YOU.....MUZAAAAAAAAAAN"Tanjiro's face was full of rage. His breathing became uncontrolled as he then jumps out of the sewer. 

Back in the present.

"So...you killed another kisumu member, and nearly killed uppermoon 3?" Said a bewildered Iguro. "Yes, Iguro." The hashira's look at tanjiro in shock, pride and honor. 

"Tanjiro. My child. We really need to talk." Says a shocked Kaguya.