Bonds

"Hahaha, look at you, on your last legs already, man. Just drop dead already, man." Gyuutarou mocked at Hiroto, who was steadying himself as he covered his mouth.

"Hiroto!" Uzui shouted, however this one moment of relapse allowed Gyuutarou to close in on him and sent a kick to his back, to which Uzui blocked but was still sent away crashing through the ground.

Hiroto took his hands off his mouth as he looked at the blood that was covering it. 'I don't have much time left, huh? It sure does hurt, feels like my whole body is on fire from the inside and being stabbed countless times.'

As Hiroto was trying to stabilize himself, a sash came from the side aimed at his body. Lifting his arm, he tried to block it but the strength in his body was diminishing, causing him to be sent flying.

*BOOM*

"Gack! Cough! Damn, that hurts." Hiroto grunted, getting up from the ground with uneven steps.

"Brother!!" Tanjiro shouted, also bleeding from several places from Warabihime's attack. He started to increase his speed and keep Warabihime from making another move, as Zenitsu and Inosuke flanked her.

Appearing behind Hiroto, Gyuutarou's voice came into his ears. "Time for you to die brat. Been fun." He raised his sickle and was going to cut Hiroto's head off.

'Crap, my body won't respond to me.' Hiroto thought as he struggled to turn around. As the blade came in closer and closer, suddenly.

*BOOM*

Gyuutarou was sent flying as Nezuko came and kicked him away.

"Mmph!!" Nezuko stared angrily at Gyuutarou as black lines started to spread from her left eye. She stood in front of Hiroto, shielding him.

*thoom* Kicking the dust up off the street, she propelled herself towards Gyuutarou and sent another kick.

"Tsk, who the hell is she. What's a lowly Demon doing here? And protecting a Human? Annoying." Gyuutarou grumbled, as he then proceeded to cut Nezuko's in half with his sickle and tossing her away to the side.

"Nezuko!!" Hiroto yelled out, but then stumbled onto his knees as he breathed heavily and clutched his chest.

Nezuko crawled on the ground as she gritted her hands and stared back at Gyuutarou.

"Look at you, it'll take you a long time to regenerate back your leg. If you stay back, I'll let my sister take you into her sash." Gyuutarou said, scratching his neck.

Nezuko completely ignored his words as he stood up, and stood back up, as her whole body regenerated.

Warabihime sensed something weird coming from Gyuutarou as she looked towards Nezuko, and thought in disbelief. 'Wait a minute, what the? Didn't brother sever her whole body? How can she stand? Her healing and regeneration speed just… matched that of an Upper Moon…'

*thud*

The sound of the bamboo mouthpiece fell from Nezuko's mouth, revealing her fangs once more. Her body started to grow to that of adult size, as leaf patterns grew on her body. The veins on her body started to bulge as a horn grew out of the top right of her forehead.

"Grrrrr" Nezuko growled as she stared Gyuutarou down.

"What the hell is this? How did you just get stronger? Ahhh, the envyyyy." Gyuutarou said, ripping into his arms as he started to scratch even stronger.

Nezuko then kicked off the ground and rushed towards Gyuutarou once more, launching another kick towards him. Gyuutarou then sliced off her leg, and just as he was about to go for her body once more, he was kicked to the ground.

*BOOM*

'Wha- How?' Gyuutarou thought, 'Her leg instantly regenerated back the moment I cut it off?! Ahhhh, I wanna kill her, I wanna kill herrrr.'

Nezuko started curb stomping Gyuutarou's back over and over again, *boom boom boom* as he started being pushed into the dirt. Nezuko then revealed a devilish grin as she stared him down.

Before Gyuutarou could get back up, the blood from Nezuko that was on his body started to ignite and set his whole body aflame.

"Aghhh!! It burns!!" Gyuutarou yelled, scratching at his whole body to extinguish it. Nezuko then grinned even more widely, as she proceeded to kick him up into the air and back towards Uzui.

*BOOM*

Leaving a big crater where Gyuutarou laid in. Hiroto stared at Nezuko's back, as his eyes started to get hazy. Hiroto then started to walk towards her, using his sword to support his body.

"Ne-Nezuko… Stop… You… if you continue… you won't be able to go back." Hiroto through his labored breaths, as he approached her.

*clang clang* *boom boom* Gyuutarou and Uzui then started to trade blows once more a distance away from Hiroto and Nezuko, with Tanjiro, Zenitsu, and Inosuke fighting Warabihime on the rooftops.

Nezuko turned to her brother and saw the blood on his body. She started to salivate, as he pupils dilated.

"Graahh!" Nezuko then pounced unto Hiroto, pinning him on the ground. Bringing her head down, she was about to take a bite out of Hiroto but stopped, when she looked into her brother's sad eyes.

"Hiroto!" Uzui shouted, but was then forced back to concentrate back on his fight with Gyuutarou.

"Doesn't… this brings back memories? *cough* It was… before we met Giyu… It must have been hard… for you…" Hiroto said in a low tone, smiling back at Nezuko.

Nezuko stared back at him and started to shake, her grip loosening more. Hiroto moved his arms and brought her down into a hug, whispering into her ear, "I'm sorry… Just leave it… to your brother… Come back to us… And sleep."

"Waahhhh!" Nezuko started to cry, as she bit her own lips, causing the blood to fall onto Hiroto. In the next moment, the blood started to set Hiroto on fire, however, it didn't seem to hurt him, but rather made him alleviate from the poison.

Nezuko's body started to shrink, as she got smaller and smaller as was about the size of a 4-year-old.

Hiroto's eyes widened, he couldn't feel the pain from the poison anymore. Carrying her up, he looked around and saw her box on its side next to some debris from a collapsed building. Putting her back inside, he whispered. "Leave it to me." Before turning back to where Gyuutarou was.

Staring at Gyuutarou who was fighting against Uzui, Hiroto gnashed his teeth in anger as his blood started to boil in hatred.

"Gyuutarou!!" Hiroto yelled out.

"What? How the hell are you still alive? Wait… How did you get rid of the poison?! You hateful kid." Gyuutarou said, scratching his face and letting the blood drip down, as he performed his blood art, 'Splatter Sickle' and sent them towards Uzui.

Hiroto raised his sword above his head, as he stared hatefully at Gyuutarou, the mark on his hand growing and reaching his neck as they glowed red. The monocle on his face fell to the ground, but that didn't hamper his vision, as his eyes turned into a bright crimson red.

Gyuutarou then launched himself towards Hiroto in fury, wanting to slice him into pieces. Hiroto just stood still and stared at Gyuutarou who seemed to be moving slow within his eyes.

But that wasn't all. 'I can see it. I can see it all. His muscles, his blood flow, his joint movements. I can see his brain and heart. He's… slow.'

'Blood Demon Arts, Rampant Arches of Evil' Gyuutarou slashed downward rapidly in all directions, creating a dome of blood blades around Hiroto as they surrounded him.

'Breath of Silence, Final Form: Silent Night'

As Gyuutarou arrived, before he got to swing his sickle, Hiroto disappeared from his position leaving only a hazy afterimage, making all the blood blades miss their target.

"Slow." Hiroto's monotone voice came from behind Gyuutarou, as he stood with blood dripping down his sword. Gyuutarou slowly turned and looked into Hiroto's eyes, causing shivers to be sent down his body. It was as though he was staring into the eyes of a man who could see through everything.

"You!! You damn brat! I'm going to rip your innard's out, man!" Gyuutarou then jumped and launched himself towards Hiroto, who just nimbly dodged his strikes and stood next to Uzui.

Uzui stared back, eyes widened. He wanted to talk, but the words were caught in his throat.

As Gyuutarou began his next attack, Hiroto spoke up, "Say… How long is it going to take before you die?"

Gyuutarou's eyes widened, and just as he was about to shout. *shing shing shing* *thud* Thin lines of blood, akin to slashes, showed up all over his body as they started to grow. Then his arm fell to the ground, along with his leg and the rest of his limbs, as well as his body being cut in half. His head rolled along with the dirt and rested at Hiroto's feet as Gyuutarou stared up at Hiroto and into his emotionless red eyes.

"Aghhhh!! Brother!!" Warabihime shouted, as her head was then cut off by Tanjiro, Zenitsu and Inosuke at the same time and flew up into the air, landing with an audible *thud* and rolling next to Hiroto, who ignored it.

Hiroto only gave one last glance before turning and walking away to Nezuko's box, but that one glance meant a thousand words towards the two Demon Siblings as they stared at his back.

No one said a word, as Hiroto walked over to Nezuko's box and sat down next to it, leaning against a wall and falling asleep. The mark on his face and neck receded to his hand, as well as the crimson color on Uzui's sword which faded away.