꧁𝑆𝑢𝑛 𝑎𝑛𝑑 𝑀𝑜𝑜𝑛꧂ |Tanjiro X Reader|

꧁𝚃𝚑𝚎 𝙳𝚎𝚖𝚘𝚗 𝙺𝚒𝚗𝚐, 𝚙𝚝 𝟷꧂

F/n ran through the forest, following the Kasugai crow who kept repeating 'ATTACK ON THE UBUYASHIKI ESTATE'.

F/n was terrified, facing the demon king was definitely a topic that would shake any demon slayer to the bone. Was she ready? Could she survive the endgame?

She'd been doing nothing but training the past few months, if she was anything it was ready. But she didn't know if she could end up being of any use in the battle.

Of course she would be accompanied by the pillars and Tanjiro. Along with Zenitsu and Inosuke, but she didn't know how powerful Muzan really was.

F/n felt as the vibrations from the estate became harsher, Muzan gave off the most violent vibrations she'd ever felt.

"What's he doing here! Why now!" Someone yelled in the distance. F/n immediately recognized the voice as Tanjiros.

She began running in the direction of it, it was time to face him again. "Tanjiro-Kun!" She yelled after him.

F/n felt his body shake as he turned towards her, he was accompanied by the water pillar, Tomioka Giyuu.

"F/n-San!?" Tanjiro yelled, pulling her into his arms.

"Guys! This is no time for a reunion! We need to get to the estate!" Giyuu yelled, running in the direction of the fire.

Tanjiro looked F/n in the eyes, "We'll talk about this later, let's go." He said, running after Giyuu.

F/n took in a deep breath as she did the same, running next to Tanjiro.

Tanjiro had the angriest look on his face as his Demon Slayer Mark appeared on his forehead.

"MUZAN!!" He yelled, his voice booming over the land.

The other pillars had already shown up to the scene, it was now or never. They had to kill him right here, right now.

Breath of Moon, Tenth form: Dance of the moon spirit!

Everyone pounced in to attack Muzan, all in sync. A smirk appeared on the demons face as the floor caved in, causing all of them to fall into what seemed to be a never ending realm.

F/n ended up being separated from Tanjiro, she began to be surrounded by demons of all kinds. F/n took in a deep breath and a smile appeared on her face.

"I'm back in business baby!" She yelled and took a fighting stance.

Breath of Moon, Eleventh form: Moonlight through Bamboo, Drilling slashes, eleven consecutive strikes!

F/n cut off the demons heads one by one like she was having a field day, the look of pride never leaving her face.

She put her sword back in its sheath and began to look around, she couldn't tell what kind of trap Muzan had set up for them, but she definitely didn't like it.

F/n kicked through a door, which was definitely a bad idea. She fell from about twenty feet onto someone.

"What the hell!? Who the fuck are you!?" They screamed, pushing F/n off them.

"I'm F/n L/n." She said, brushing herself off, "Who are you" she asked.

"Shinazagawa Sanemi..." he muttered standing up, he gave off strong vibrations.

More demons came crawling through the open doors, surrounding F/n and Sanemi.

"You can kill, right kid?" He asked, raising his katana.

F/n nodded with a grin, "Of course I can."

"Great, let's beat their asses, make them feel unbearable pain!" He scowled and took a fighting stance, F/n doing the same.

Breath of Moon, Ninth form: Reflected sunlight!

F/n gripped her Katana tightly as she sliced off the demons heads with ease.

Once the demons disintegrated, F/n caught her breath and walked up next to Sanemi.

"What do we do now?" F/n asked, wiping the sweat off her forehead.

Sanemi hummed, "Come on." He said, opening some random door.

Him and F/n walked around for a while, making sure to keep their guard up.

"Wait!" F/n said, pausing in her tracks. Sanemi looked back at her annoyed, "what." He asked.

F/n jumped on Sanemi, pushing him out of the way of an attack. More demons had appeared.

Sanemi smiled, "those are some mean senses you have, kid!" He yelled.

Breath of Moon, third form: Selenian Whirl!

F/n's body spun as she and Sanemi decapitated the next wave of demons efficiently. These demons were easy to kill, they had no brains at all.

Once F/n and Sanemi got on their feet again, the Castle began shifting and they fell into a room with a bunch of pillars.

F/n looked around, the room looked endless, she couldn't see the the rooms walls.

"Keep your guard up, I sense a powerful demon.." Sanemi warned, gripping his sword tightly.

F/n felt the vibrations of a powerful demon, along with two familiar ones. The vibrations of Genya and Muichiro.

"Over there!" F/n yelled, running in the direction of the vibrations.

She'd gotten there just in time, Genya was about to get slashed by the demon.

Breath of Moon, fifth form: Wings of the Moon Dragon

Her body flew at the demon, launching him across the room and away from Genya. She got a good look at the demon, realizing it was Upper Moon One.

But something looked oddly familiar about him, his hair, and his haori. She stared at him until it hit her,

"Michikatsu Tsugikuni..."