warning: mentions of spoilers in the manga

|| 𝐟𝐢𝐧𝐚𝐥 𝐛𝐚𝐭𝐭𝐥𝐞 ||

♧︎︎︎

|| 𝐢𝐧 𝐚𝐧𝐨𝐭𝐡𝐞𝐫 𝐥𝐢𝐟𝐞 ||
060

ꨄ︎

third person pov

as the demon hunters, specifically the pillars were called to gather in the middle with a large open space. giyuu and tanjiro is the first to arrive and started fighting muzan with all their might. this should be the final battle between the demons and the demon hunters, this is the payback for all the deaths that was caused by muzan who mercilessly turn humans into demons.

"muzan can't be killed even if you cut his neck. we've got to drag this guy into the sun somehow. while we wait for everyone to arrive as directed find a way to attack until the sun comes up. find out any useful information about muzan and deliver to everyone. we have to survive until then, from there, the real fight starts."

thought tanjiro as he avoided one of muzan's attacks, muzan is using a whip with a sickle by the end that could pierce through a person's skin merciless and there is no telling that they'll be able to survive after that.

"his arms! flying about like blades, they're so fast." thought giyuu as he avoided the attack that is about to hit his head.

"his range is huge! i can't follow them with my eyes, so i have to avoid them by sensing them another way."

"break through!"

"break through!"

"i made it!"

thought tanjiro as he ended up closing the gap between him and muzan, but before he could land an attack. muzan is able to swing his weapon to tanjiro's way which he avoided, tanjiro thought that he was able to avoid the attack only to feel the slash that cut his right eye horizontally.

"don't close the distance! we don't need to get in there! muzan's strength can't be compared with an upper moon." shouted giyuu as he came running towards tanjiro, grabbing him by his waist as they both avoided another attack from muzan.

"you're buying time... waiting for the sun? the light won't reach into this fortress. can you really manage with just three pillars?" questioned muzan as he grab his weapon before violently swinging it around the area, causing some disturbance.

"the pillar in the striped haori and the woman pillar already seem to have been killed by my subordinate, you know?" said muzan making both tanjiro and giyuu froze from their spots as they couldn't believe what they're hearing.

two pillars have died again?

how many pillars are to die during this battle.

since both are caught off-guard. muzan decided it's best to strike another attack from him but they were able to pull themselves together and avoid it. 

"tanjiro!" shouted giyuu as he noticed how the weapon is circling around tanjiro.

tanjiro gritted his teeth as he deflected the attack, his right eye can't be of use anymore after being horizontally cut by muzan's weapon. it's possible that he's blind and couldn't see from that eye anymore.

"it's hard to judge distance with one eye! i'll have to see using smell!"

"smell it!"

"distinguish by scent. that clear world-

but before tanjiro could enter the transparent world, he ended up coughing as his insides started violently squeezing him. the attacks are too fast, tanjiro can't keep up and he's out of breath.

"the wall. as i am, completely lost track of my surroundings."

"TANJIRO!" shouted giyuu, his eyes widened as he stared at tanjiro who helplessly collided with the wall.

the weapon is about to pierce tanjiro until a certain someone came in, knocking the wall down.

"KNOCK IT OFF!" shouted mitsuri as she made a huge grand entrance.

the scene of her appearing made muzan's eyes widen. after all, he thought that she and the man with stripe haori are now dead, but seeing how she just knocked the wall open made him confused with the events happening in the castle.

"love breathing, sixth form, cat-legged winds of love." shouted kanroji as she twirls upside-down and creates multiple extending slashing attacks before retracting it and extending it again, all within a very short amount of time. 

"direct hit!" said mitsuri with a smile plastered on her face as she landed on the ground.

"uwaaa?! it had no effect! i've never been this shocked before!" thought kanroji as her mouth opened widely from shock, her eyes widen as she let out a huge gasp. her cute expression and reaction would have melted obanai but now is not the time for that.

suddenly obanai landed on the ground in front of tanjiro, shielding him from muzan.

"you'll just become a hindrance, brat. you should get out of here now." said obanai with a deep frown on his face as he stared on the ground.

"iguro-san... i'm so glad. you're alive and kanroji-san too." said tanjiro while tears started spilling from his eyes, making obanai question his concern for his safety and kanroji's.

"rather than others, how about you worry about yourself first." said obanai as he stood from his position, still standing in front of tanjiro.

"how are these guys that i've seen killed, here now?"

"what's going on."

"WHAT THE HELL ARE YOU DOING NAKIME!" shouted muzan in anger.

but unbeknownst to muzan, yushiro has now full control of upper moon four. his paper talisman now on nakime as he could control her vision.

"eh, what is this?"

"why do you look like that muzan."

everyone in the area froze in spot as they heard the familiar voice again. they saw how the woman appeared in front of where the broken wall is. the burgundy-haired woman landed on the ground safely, her boots echoing as she started walking towards where muzan is.

"where is mitsuki?" questioned muzan but y/n could only shrug her shoulders, not giving him a proper answer which made him frown in annoyance.

"where is she?" questioned muzan once again, every word he said contains his teeth grinding against each other while the woman barely flinched as she stood a meter away from the demon king.

"dead." y/n said making muzan frown even more.

all the upper moons are either controlled by the demon hunters, or dead. no one remained alive except for him, despite them living for centuries. his underlings are surely weak, no one survived, not even upper moon zero. the only remaining powerful demons are him, nakime, and y/n who's on the demon side.

suddenly a question pop out of muzan's head, "is y/n even supporting us demons? is she the reason why mitsuki is dead? is she here to kill me along with them demon hunters?" many questions circled around muzan's mind as he notice how the burgundy-haired woman stared at all her previous friends that are now her enemies. can he trust her? can muzan trust y/n?

"Y-Y/N!" shouted tanjiro as he notice his older cousin.

tears started escaping his eyes once more, seeing how his cousin is sided with muzan. he thought of the things that muzan must have done to her, is she now an enemy that needed to be killed? did she devour any human? 

"p-please come back." cried tanjiro as he kneeled from his laying form, he noticed how everyone in the room stared in y/n with bewilderment, not knowing if she could be trusted anymore.

"you're a good demon, i know it. you've suffered for months without me, without us the demon hunters! if only i was there when you got captured, please come back to us!" shouted tanjiro as he shakily stood up, before limping towards y/n slowly who only stared at him with amusement.

despite y/n being involved and exposed with the demons, her beliefs did not change at all. she's still the same y/n that they knew, she's still y/n kamado who they've been working with. but other than her identity being revealed, she will tell them everything after all of this ended.

"don't come close, she might strike you, you know." mock muzan as he saw how y/n's hand twitches, ready to summon her strings that could massacre the whole demon hunters present in the room in a second.

"you don't know that."

"you don't know y/n."

"she's not like that she's-

"TANJIRO, WATCH OUT!" shouted giyuu as y/n summoned her strings.

the strings were all stuck on the walls of the room, the demon hunters stood frozen on the spot as the strings barely missed their skin. the room is filled with y/n's strings that's attached from her hands to the walls, leaving no vacant spaces for the demon hunters to move.

"have you got last words to say?" questioned y/n, making everyone's eyes widened except for muzan who chuckled deeply, completely relaxed with the idea of y/n siding with him, after all y/n is a unique and powerful demon that could be of use to him.

might as well marry her if he got the chance, after all, this burgundy-haired woman peaks his interest from the very start that's why he didn't order his subordinates to kill her in their first encounter.

"y/n please."

"not like this, i know you're in there somewhere!"

"PLEASE COME OUT Y/N, IT'S ME TANJIRO!" yelled tanjiro in agony as he felt the strings nearing his body as it pierced his sleeves, creating a hole.

"not the kind of last words i want to hear, but well then, you've been of great help."

"now please dig your own grave, and die."

"muzan-sama."

once y/n muttered those words, muzan's eyes widened and before he could even react. all the strings attached to the walls came undone, as it circle around muzan's whole body, squeezing him to death until his body exploded from the pressure as his head fell off and landed on the ground.

everyone in the room is silent as they witness how y/n attacked muzan instead of them. tanjiro is the first one to make a noise as he cried from relief, running towards y/n before jumping on her and giving her a hug which y/n smiled sweetly at and returned the favor.

"i seriously miss your annoying ass, tanjiro." mumbled y/n as tanjiro could only whine and cry while clutching y/n tightly, not wanting to let go as he's afraid of losing her once again.

soon tanjiro's cries is joined by mitsuri's as she run towards the two hugging cousins before joining in. mitsuri shouted some profanities and scolded y/n for always being reckless and putting herself in danger, and that she accepts y/n as a demon which made y/n sink her head on mitsuri's shoulders as she could feel her eyes watering from mitsuri's words.

after all, y/n's been a nervous wreck for months. not knowing how the demon hunters would react if she told them she's a demon, they could potentially kill her like how they acted towards nezuko but she knew that if she can't convince them to not kill her, then she'd still be happy to die by the hands of her friends, her family. 

as the cries died down, the hug ended and y/n is standing while guarding muzan's head. he could regenerate any moment and she'll have to use the same technique as before until the sun rises, until then she and the demon hunters have to hold muzan in this place and eventually expose him to sunlight.

"y/n." 

y/n tensed from the familiar voice that she last heard from months ago. this, after all is their first meeting after his visit in the brothel she's been thrown in. y/n turned around and saw obanai standing in front of her, his bangs covering his eyes as he didn't make in contact with hers.

"iguro-san." mumbled y/n, an awkward silence occurring between the two as everyone around the area found the silence deafening and their interactions as painful to watch because of how oblivious the two could be.

"i'm glad you're alright. it doesn't matter if you're a demon, having you standing in front of me right now is a huge relief. don't leave anymore, let's finish this battle and go home." muttered obanai making y/n's eyes widened, obanai knew this could be the last time that they'll be together that's why he took the chance to talk to her and possibly tell her how he feels.

he grab her wrist before pulling her close to him. his hand making its way around y/n's waist as he embraced her, pouring his feelings in the process which overwhelmed the poor burgundy-haired female who's in the verge of collapsing from the heat arising her body.

but nonetheless she hummed in response, agreeing to finish the battle so that the both of them can finally rest and go home. and maybe - just maybe start a whole relationship that will blossom, just the two of them against the world.

but of course the whole situation became even worse when muzan finally regenerated himself, an anger look plastered on his face as he tried spotting y/n, and soon found her in an embrace of another man, which angers him even more.

"NAKIME WHERE THE HELL ARE YOU!"

"WHAT ARE YOU DOING!"

shouted muzan who's blinded by anger, his vision turning red as kill is the only option showing in his sight. he wanted nothing more but to tear y/n into shreds but he knew he couldn't that to her, that's why devouring her is the only option, in that way she'll remain alive inside of him.

"what am i doing? i'm manipulating this woman's vision, muzan, you have committed the heaviest sin in this world. you took tamayo-sama from me, i'll make you kneel in regret!" shouted yushiro who took over nakime with his paper talisman.

the whole fortress is shaking violently as it started bending, obanai embraced y/n tightly, not letting her go as the ground violently shook from the fortress being bent.

"from here on, i will drive you above ground!" shouted yushiro with blood pouring from his eyes, his angered feelings after knowing that tamayo passed away because of muzan, he'll surely end muzan.

"stay behind as much as possible, your attacks are long range so maintain that distance and don't get hurt." said obanai to y/n as he kissed her forehead unconsciously, making her flustered even more.

"water breathing, fourth form, striking tide!"

"serpent breathing, first form, winding serpent slash!"

both obanai and giyuu jumped into the scene and are nearing muzan, trying to land a hit on him, but muzan is able to deflect the attacks. muzan could only grit his teeth, his thoughts scattering in his brain as he thought of a safe idea that wouldn't lead them outside where the sun can show up.

the fortress start shifting and changing as muzan is starting to fall, but he crushed his fist and automatically nakime's head exploded from muzan's attack which made yushiro grit his teeth in anger. 

all the demon hunters started chasing muzan as he run from all different directions to let the demon hunters lose their sight of him. he also vigorously swung his weapon as it started ruining the fortress. 

y/n on the other hand remained in the spot where her and obanai hugged, she couldn't care less if muzan is trying to run for his dear life because her strings can catch up to him. in a matter of second, while muzan continued running away, he saw thin threads forming on the walls as it violently attacked him making him lose some limbs. 

muzan prepared his body for regeneration only to find out that his regeneration speed drastically dropped after being slashed by the threads. his eyes widened before gritting his teeth, remembering that y/n can wield the sun breathing and is probably capable of honing both her breathing and blood demon art.

"YOU DAMN PESKY TSUGIKUNI!" shouted muzan in anger as everyone that's chasing him tilted their heads in confusion as to who is the 'tsugukuni' he mentioned.

in anger, muzan stopped running before looking back and swung his weapon which made in contact with tanjiro who winced in pain. tanjiro yelped in pain which y/n heard, her eyes darken before sending more threads towards muzan who avoided some of the attacks but nevertheless still got pierced from the threads. 

instead of staying back like how y/n agreed on, she started running towards where the others are as she heard creaking sounds from the castle. there is no doubt, the castle is soon going to break apart. as y/n arrived in the scene, she's a few meters away from obanai.

"this is not good, if we don't get outside, everyone but muzan will die." mumbled y/n to herself as the creaking continued on, the floors started rumbling as it slowly breaks apart.

"EEP!" y/n heard mitsuri shout as she was caught off-guard and notice how muzan's weapon is close to her face.

"KANROJI!" shouted obanai as he started running towards her direction.

muzan ended up getting a blade stuck on his forehead, as his eyebrow furrowed from anger.

"GYAAAAH!" yelp kanroji as she felt herself getting tackled by obanai as the both of them fall on ground with obanai on top of kanroji, shielding her away from harm.

"curse that brat." 

thought muzan as he felt the whole fortress crumbling.

without wasting time, y/n summoned her threads and formed a somewhat shield to every demon hunters in the fortress, for them to avoid dying once the fortress crumbled into pieces.

she ended up not having a shield from the crumbling fortress, as she tried her hardest to give everyone shields. her vision becoming sharper then ever as she spotted every demon hunter and lending her strength to avoid their deaths, as the fortress crumbled she could hear tanjiro shouting for her to come and shield herself but she didn't listen as she continued searching for a certain pillar.

"kyojuro where the hell are you." y/n mumbled as she closed her eyes, her vision becoming sharper as it started searching from room to room, hallways, and a bunch of closed doors and there she found him running from different directions as he continued fighting weak demons and searching for her.

she immediately summoned threads to form a shield on top of rengoku as the infinity castle crumbled, most of the sharp objects falling on y/n as she held her ground and supported everyone from above. she's a demon, she can heal from these injuries, but the demon hunters are humans, they could die from almost everything harmful to them.

tanjiro landed on the ground safely with no injuries, he could see the moonlight above him, shining brightly. 

"i'm outside, but this is dangerous!" 

"WE BROUGHT MUZAN TO SURFACE BUT THE PLACE IS THE CITY!"

thought tanjiro to himself as be abruptly stood up from his position, glancing around as he noticed the buildings and the houses in the area. 

"he's significantly afar from the expected destination! it was a skill showdown between yushiro-san and muzan, the fact he has been brought into the surface is nothing short of amazing." complimented kiriya but soon snapped from his thoughts as he looked at his sister from behind.

"HOW LONG UNTIL SUNRISE?!" questioned kiriya as he half shouted at his sister who's been shaken from everything that's been happening. 

"there's still... an hour and a half left." said kuina, his younger sister.

"still... then."

"THERE'S STILL ONE HOUR AND A HALF LEFT!"

"HOUR AND A HALF UNTIL SUNRISE!"

said the crow, announcing to everyone in the area.

"too much."

"that is still too much time left... where's everyone?"

"kanroji-san."

"iguro-san."

"tomioka-san."

"you're all safe."

thought tanjiro as he saw how everyone started standing from their fall. his eyes continued searching for his older cousin, wondering where she is after seeing how she shielded everyone but herself from the crumbling fortress.

"Y/N!" shouted tanjiro, panic forming on his chest as as looked everywhere but y/n isn't found anymore.

but soon, his