My Sweet (Demon Slayer/KNY x male reader)

swamp

Nezuko swung her leg up as a brutal attack at the demon, leaving a small crater int he ground. 

"Nezuko! Don't stray too far!" Tanjiro called out. The demon girl obediently turned around and ran towards her older brother. A villain demon emerged from the ground in an attempt to grab her, but she managed to escape him just in time. Tanjiro stood in place as he forced himself to think. The ground suddenly buckled under his feet into the gross swamp material. Out of habit, but mostly to reassure himself, he grabbed Y/n's hand. "Nezuko! I'm going under! Protect them!" he screamed out before he was swallowed by the ground. 

Y/n curiously looked around him, grabbing the different pieces of cloth that surrounded him and bringing them up to his chest, trying to find one that looks best on him. Occasionally he looked over at the red head for approval, who would always nod supportively. 

"Haha! Do you feel the pain, you little brat?! There is almost no air within the swamp! Your body must feel very heavy in this swamp!" the demon boasted cockily. 

"You cannot move here like you would above ground! How stupid of you to jump here!" the other demon agreed, gnawing his teeth together. 

Tanjiro slowly raised his sword, Y/n instantly getting what he was doing. He sent an attack towards one of the demons, scratching its face and punching it in the gut, kicking the other one that approached him. When Tanjiro finally launched his attack, he grabbed Y/n's haori and pulled him back so that the boy wouldn't get caught in the crossfire. The demons arms, legs and heads went flying through the water. The red head choked on the air, or lack there of more like, and started swimming towards the surface for air. 

Nezuko was sending more and more attacks at the demon, carelessly kicking and punching him, not even giving him the chance to fight back. When he finally managed to get a hit on her, he threw his arm back to inflict more damage but Tanjiro severed his arms before he could lay a hand on her. "Don't touch my sister!" the boy growled. Y/n stood next to him in front of his best friend protectively. "You have a smell that reeks of decay... an odour of pure evil! How many people have you killed?!"

"The ones we killed were all women! If they continued to live, they would only become uglier... that's why I ate them! You should be thanking u--" 

The demon was cut off when Tanjiro sliced off his jaw. "Enough" Tanjiro hissed. It took Y/n aback a little bit. He'd never seen Tanjiro so angry. It was scary. "Tell me about Kibutsuji Muzan" he demanded.

The demon looked down at the ground, defeated. "...I can't..." he whispered. "I can't!! I can't, I can't!" he screamed and his limbs grew back, but his head quickly got hacked off. 

Tanjiro stared sadly at the disintegrating body and back at Y/n. He walked up to The h/c and closed his eyes, pressing a kiss up against the demon's forehead. "I'm sorry, Y/n" he whispered and stepped backwards. "Go wrap yourself up. Off you go". Don't get me wrong, he loved Y/n a lot, but he didn't like getting emotional around him. It made him look weak. He couldn't afford that. He wanted Y/n to trust that Tanjiro would be able to protect him for once, instead of the other way around how it usually was. 

Y/n looked at him, worried, but nevertheless covered himself with his scarves. 

"Kazumi-san, are you okay?" Tanjiro asked and crouched in front of the mourning man. 

"...I lost my fiancé... what do you think?" Kazumi murmured. 

"No matter how much you've lost, you have no choice but to keep living, no matter how badly you've been hurt, you must keep living with your newfound strength" Tanjiro said softly, only for his uniform to be grabbed by Kazumi. Y/n was about to attack out of defence, but decided to stay put.

"How would you know about any of this?! You're just a kid!" Kazumi yelled at him. Tanjiro placed his hand on Kazumi's and smiled sadly. 

"Keep Satako's hairpin" the red head spoke gently and pressed a bow into the mans hand. Y/n clenched his fist angrily. How could Kazumi know what Tanjiro was going through? What does Kazumi know about him? Nothing. He had no right to snap at him like that. Tanjiro just saved his life and that's how he treated him? It's unfair. 

Tanjiro bowed and walked over to Y/n, taking his hand. He turned back and waved. Y/n didn't bother to wave. He was still angry with Kazumi. 

"Why are you still being so nice to him?" Y/n asked angrily. "He was a dick" he announced and reached into his boot, whipping out a knife. "I should stab him right now"

"No- no stabbing- why do you have so many knives?" Tanjiro lowered Y/n's arm and the demon shrugged. "Being rude back would do nothing. If he wants to believe that I have no idea what I've gone through, that's on him. I'm not going to waste my time on him. I have you and Nezuko" he smiled. 

Y/n stayed quiet. He hated that Tanjiro was right. He just looked at the ground and kicked the gravel as he walked. 

The crow suddenly started screaming more and more about a demon in Tokyo. Y/n looked like he was about to strangle that thing and Tanjiro was desperately trying to get it to calm down. 

"Looks like we'll be walking for a while, so don't waste your energy" Tanjiro informed and looked ahead towards the rising sun. 

"Have you met me?  I never run out of energy!" Y/n proclaimed with a proud smile. Tanjiro smiled back. He reached over and moved the demon boys scarf farther over his face so only  his eyes were revealed. 

"Alright, I hope so. I have extra rice balls for you, so if you get tired you can eat without taking breaks" Tanjiro planned. "Of course I'll need sleep, so we will need to pause every now and then"

"I can carry you while you're sleeping" Y/n offered.

"There's no way you're strong enough for that"

"Am too! Come on!" Y/n grinned, grabbed Tanjiro and held him bridal style. 

"Woah!!" the red head exclaimed as he was suddenly lifted into the air. "Okay, maybe you can! But let me down for now, I don't want to wear you out. I'm not too heavy, am I?"

"No. It's like carrying a bunch of grapes"