Y/n was sitting on a boulder at the edge of a cliff as she felt the gentle breeze fluttering her clothes around. She opened her e/c eyes as her thoughts wandered off to unwanted ones. She let out a sigh before closing them once more... 

"Concentrate...," Y/n muttered. 

She took a deep breath as she concentrated on her breathing, relaxing her muscles before immediately she felt every movement in her body... systems... muscles... bloodstream... she then expanded her breathing to the forest, examining it.

Deep breathe...

Breathe in...

Breathe out...

Breathe in...

Breathe out...

A relaxed look cast on Y/n's face, however, her face still stoic.

The forest's landscape came to her mind.

The path...

The birds chirping as they fluttered from tree to tree...

The trees as they moved gently in the wind...

Animals scuttering around on the land...

A crying and whining boy...

...

Wut...

Y/n flinched as a boy came to her vision. Even though there was no sound the screaming face of the boy showed her that he was terrified... how... amusing... 

Y/n studied the man, he looked young for sure, maybe... around 16...? He had fair skin and downward-sloped scared-looking eyes that faded from a soft brown to gold. He had short yellow hair of varying lengths, cutting off squarely at the ends where if faded to a darker orange that fell in front of his face in uneven bangs.

Y/n raised an eyebrow, her eyes still closed as she saw a brown Demon Slayer uniform as well as a white-triangle patterned, yellow and orange gradient haori. The boy was with another, however, she couldn't see his face only a black and forest green checkered haori...

Just then a girlish scream echoed through the forest causing her to jolt and wobble on the boulder. She looked into the direction before her ears caught onto the sound of growling and a... drumming noise.

"A demon huh...," Y/n muttered to no-one in particular. "I should check it out," 

She stood up her long black hair with golden streaks following behind her as she whipped her head towards the direction of the sound. 

~

Y/n could feel it as she almost effortlessly ran past the trees... as if she was flying. Her f/c haori breezed past her as if it was a flicker of a flame. She stopped when she was in front of a house... her eyes landed on a bloodied body just in front of it. Walking towards the corpse she bent down before sighing.

'Another life lost...,' Y/n thought before she closed the man's eyes. 

A sudden scratching noise caught her attention as she turned around... there was nothing in particular... except for a box... a box? The box was slightly trembling, Y/n could hear the sounds of breathing and scratching from inside...

"A demon...?" Y/n spoke softly in confusion... The 'thing' inside didn't necessarily smell of a human but at the same, it didn't smell like a demon... it smelt like... both?

Tilting her head Y/n's eyes narrowed before she heard another scream from inside. Her eyes trailed to look at the entrance of the house.

She slowly walked towards it after glancing at the box one last time before sliding the door open.

The air was eerie and the room was dark... the only source of light at the entrance was the light from outside. Y/n examined the room not yet going in, the corridor was messed up there was dust everywhere and drops of blood... 

"I'm coming in...," Y/n gentle muttered before shutting the door behind. 

She took a few steps forwards when a sound of drums echoed in her ears and when her eyes blinked she found herself in another room.  

"...Demon art," Y/n sighed as her eyes sharpened. "How annoying," 

She glared at each side of the room concentrating at the upcoming sound.

'Dum' 

The room shifted left...

 'Dum' 

The room turned right...

'Dum'

The room changed...

'Dum'

...Nothing happened...

'There's something about that sound...,' Y/n thought but was soon caught off guard by close sounds of screaming and thudding of feet. Just then the fusuma (Japanese traditional sliding doors) were broken as two people crashed into the room. 

"Zenitsu! Get up!" A young boy cried as he held onto the yellow-haired boy named Zenitsu. 

 "It's in my knees now! 80 percent of my fear is in my knees!"  Zenistu shrieked.

'Ah... the yellow-haired guy,' Y/n thought as she stared before she slid away to a corner not wanting to be seen. 'Why are they runn...oh,' 

In front of them was a demon, it's tongue was out causing drool to spill everywhere and its eyes were slanted up in a taunting manner. 

"There's no time to whine, all right?" The younger child shouted in fear.

"Just leave me behind, okay? Make a run for it!" 

"I can't do something like that!" The child protested.

Y/n stared at them tilting her head.

'Should I save them or not...,' Y/n thought. 

"Zenitsu-san!" The kid called out as Zenitsu's weight slightly shifted to the ground. "Zenits-,"

...

...

'He's sleeping,' Y/n thought before she let out a light snicker. 

"What's up with him?" The demon smiled as he took steps closer.

The boy gasped before grabbing Zenitsu and pulling him inside the room trying to put as much distance as possible. But it came to a stop as the kid felt the door on his back preventing him from escaping any further.

"Die!" The demon laughed as it's tongue flung towards the two. 

"Zenitsu-san!" The kids yelled once more. "Please wake up!"

Y/n's hands reached for her weapon but her eyes noticed the boys hand flicker... the tongue was cut off in an instant. Y/n watched as Zenitsu stood up shielding the younger boy with his body before reaching for his Nichirin blade.  The sound of gas leaking was heard as a white smoke came out from the boy's mouth.

"Wh-What's this sound?" The demon asked in slight confusion. 

"Thunder Breathing First Form, Thunderclap and Flash," As soon as the words were spoken the boy was on the other side of the room in his trail was jittering sounds of electricity...

'Fast...,' Y/n thought, she was finally in view, watching from the corner.

The yellow-haired boy let out a chocked gag before he turned around, his eyes finally opened. The head of the demon rolled towards his feet as the boy screeched in fright leaping away.

"It's dead!" The boy yelled as the demon's head turned to ash. "All of sudden, it's dead! What the hell? I can't take this! What is this! What is this? Yuck!"

"Unconcious huh...," Y/n spoke quietly causing the two boys to look in her direction in fright. Her face was still covered by the shadows of the room.

 "AHHH!! Who are you!? Who are you?!" Zenitsu yelled. 

"How loud...," Y/n muttered in annoyance before walking away.

"WAIT!" Zenitsu called out before clutching to Y/n's haori. "Did you save me?!"

"...no," Y/n said before she tried to walk again only to fail. 

"You did didn't you!!" Zenitsu cried. "Will you marry me-,"

"No," Y/n said with no hesitation before finally succeeding in walking away. 

"Wait! At least let us come with you...," The child spoke in fear causing Y/n to stop.

"... follow quietly," Y/n sighed as she motioned for them to tag along.

~

It wasn't long before she came across a room before she slowly turned towards the two.

Y/n lifted up her index finger and put it gently to her lips before pointing to another room.

"Go there," Y/n muttered softly before facing the door again. "If you do you may find a way out," Y/n then heard the scuttling noises of the two as they entered the other room.

She then proceeded to slam open the fusuma door interrupting a boy who was already fighting the demon. He had ruffled, black hair with burgundy tips his checkered, black-and-sea-foam-green haori fluttering as he swung his Nichirin blade only to fail as the demon tapped on a drum.

'Dum'

A sudden gust of wind breezed as the tatami mats were cut into claw-shaped marks. 

'I see...,' Y/n thought as she stared at the marks and then recalled the sound.

"I've done a good job until now!" The boy spoke catching Y/n's attention. He positioned himself so that he was defensive, the blade in front of his face as he spoke confidently. "I have what it takes! And not today... or any time in the future! Even if I'm broken... I'll never give up no matter what!"

Y/n's eyes widened as she heard those words. 

An image blurred into her mind...

The image of a boy with white-silvery hair... the boy slowly turned to her... staring at her with golden eyes... he smiled... his eyes slightly squinting as he showed a gummy smile before he spoke...

"I have what it takes!" 

"Not today or any time in the future!" 

"I'll never give up no matter what!"

"For you! So you better stay with me Y/n...forever!" 

Her eyes then saw the burgundy hair as white-silver... the sword as a flute... the clothes as a light ocean blue and white haori... the fusuma doors as soft fluttering trees... the hard tatami mats as soft grass... Y/n unconsciously muttered out a name though no-one heard...

"...Akari...," 

___________________________________________________________________

First chapter!!

Hope you guys enjoyed!! I gotta say, Kimetsu No Yaiba is one of the most outclass anime I've ever seen!! Love it so much!!

Anyways thanks for reading the first chapter!

Word count: 1595

ACE out~