#upper six

His Moon

Genuinely a mystery to how you got with this guy

Hell even Akaza when he met you was more concerned you were there against your will

Oh the stunned look when you were just all smiles (nervous ones at that) at them

You and Kokushibo had an interesting relationship to say the least

He was quite the bold character and had a sharp tongue to follow his demeanor

You on the other hand were just quiet and shy, soft spoken even, a sharp contrast to the Upper Moon

You quiet nature tho is something he very much enjoys

It lets him sit and think while he waits for the sun to rest for the night

Often during the days he sticks to just 1 or 2 rooms that are blacked out for him

When you step into either the rooms he could be in you often have a book in hand and a red face when his eyes meet yours

That just leads to you sitting in his lap and reading while he meditates

He'll help where he can around your home as well, he's not home often but when he is, he helps and talks with you about his outings

You're no stranger as to what he does, I mean come on- he was demonic looking from when ya first met him so it's hard to say that you wouldn't know what he does

As long as you don't have to hear or watch any of it your fine

Another thing he likes about you

One time after WEEKS of working up the courage you asked him if you could play with his hair

Not in a braiding manor but rather just run your hands through his hair

He said no

But when he sees your defeated face he would sigh sharply and make the smallest gesture for you to come over and do so

When you do get to play with his hair the first time it's surprisingly soft

Who said demons couldn't care for their hair?

He may be a demon but he's not a barbaric one, he bathes and washes his hair

Once he sees how much you enjoy messing with his hair and he realizes how good it feels he lets you do it more often

When he wants you to play with his hair he won't outwardly say for you to do so but there will be signs that he wants you too

They won't be overly obvious so pay attention or you'll have a sour Koku on your hands to deal with

The one time you saw something irk him was when you and him were having a rather soft moment together

You were sitting in his lap facing him while his face was tucked away in your neck as you were gently scratching his scalp when a certain pot rolling noise was heard and a boisterous laugh followed it

"Oh! Seems I've happened to interrupt something, hmm?~"

Gyokko was a needle thread away from remembering how it felt to be a scared little human while fearing the close call with death

First time you got to meet the other upper six was purely by accident on Nakime's part

While strumming to summon Kokushibo to the Infinity Fortress you were dropped in his normal spot right on top of him without warning

How you were summoned at the same time as him was beyond his thought process at the moment

He's still reeling from you landing on top of him with a petrified look

You were sat closely to his side while your demon boyfriend was scolding Nakime on summoning you there

His smallest sliver of fear was warranted when you were next to him one second and the next you weren't

The other 5 Upper Moons were suddenly lined in front of you as your face was pale and frozen with fear

"How adorable!!! Kokushibo never disappoints when he's out, this one's adorable!!"

Before a Rainbow eyed demon could even grab you or lay a touch on you his hand was sliced all the way up his arm and his head was cut off in fours

You didn't need to look around to know who did it to him, as the blonde demons head and arm was regenerating even he was quiet

You went to scoot back and away only to be stopped by a pair of legs

Behind you was Kokushibo with a warning in his eyes as he looked at all the demons

Tense as it was Gyokko was the one to try and break the awkwardness by explaining who you were

Yeah- he was sent flying into one of the many distorted building rooms around you

After that and a defeated Upper 5 is what led to you meeting the other demons he disliked and worked with

Hantengu took to you quicker with your soft and sweet nature that surrounded you

He always was calling you 'too sweet for this world' or 'how can something so sweet exist in such a twisted world'

Akaza got along with you cause you seemed to remind him of someone, even though he can't recall that person, and the fact that he's the only demon there that wouldn't kill you in a flash

He was more like a protective sibling if anything, that and you rather enjoyed one another's company once the awkwardness was passed

You already knew Gyokko when he had interrupted a private moment between you and Kokushibo, he was odd to say the least, him and his weird fish abilities

If anything you and him just exsist around one another, and artist quarrel is what you could call it

Gyutaro and Daki were on a whole different realm of getting along with you, they were indifferent about you

I mean- they did watch basically their savor almost get mutilated by Upper Moon 1

When they did take to you tho it was more like a mother figure than anything, after Daki got over her 'prettier than thou' complex

Gyutaro was just enjoying watching you and his sister talk and do one another's hair and makeup (you both dragged him into getting his hair done with you too)

Douma was the last one to even be let around you and only when Akaza or Kokushibo was around you with him

He was- odd to you to say the least, always so smiley and oddly gleeful when he would say something morbid with a smile or growing grin about it

You were never left alone around him, he always spoke about how sweet you smelled and how delectable you would be and that's probably why Kokushibo was with you

His head was promptly sent off his shoulders by an irritated Akaza

After that you don't need to worry your head about it, Akaza and Nakime (after she had apologized to you) reassured you that Kokushibo was with you for you, not for entertainment or food

Muzan...

He was cordial with you if anything, yes while you were with his best demon behind his back he talked with Kokushibo on it a different day

He really only tolerated you till you offered him one of you flower identification books and some of your notes on them

You knew the flower he was looking for and were promptly obsessed with it's beauty yourself

After that it led to you and him talking about the different flowers he could try for his 'Science experiment' as he called it

You were made away in the ranks of the 12 Kizuki to not be messed with or toyed with by Muzan personally, he can't have his 'assistant' getting killed on him

Overall after that your home some rare nights had one of the other demons in it hanging out with you or chatting and helping you out while you lover was away

Douma and Gyokko were the only ones that never came over, Douma would if he could convince one of the others to go with him, he likes your character and how you fidget when you speak, that's his only reason to see you really

Muzan when visiting was an utter gentleman tho, he'd help where he could so you both could sit and talk about some of your research and his about what certain flowers could be good for

Nights that Kokushibo was there no other demon would be around, he likes his time between the two of you to remain private, he doesn't need the whole Kizuki to see him being a rare side of himself with you, even Muzan respected that

You turn him good...

It was more of his biggest scare he's had in all his years of being a demon that he shared with Muzan and that was the encounter with the boy that wore Hanafuda earrings

He would have been dead if you hadn't pulled the stupid stunt of jumping in front of him to stop the younger boy from cutting his head off

How you didn't was beyond you, cause when he seized his technique you fell back with a shaky form and white face

Before the Red head and his friends and sister could say anything about it, Kokushibo had you standing and hands roughly planted on your shoulders yelling at you about how stupid you were for doing that

Leaving those stunned around you two as the 2nd most feared demon was yelling at you about being reckless and careless about yourself

Shook them even more and Kokushibo when you slapped him across his face

"Me?! RECKLESS?!?! You're the one out here fighting these pillars and slayers, from what I just saw your the reckless one here! What was your plan! You can live several lifetimes over and choose to almost throw everything we built up and out the window for a selfish- a selfish piece of shit!! I don't think you knew what you signed up for when we got together! I love you and I'm not walking the rest of this world without you anymore! Demon or not you can die just as I can, I don't want you to just throw away our years like that... My heart could never take that.."

From there... Things were a blurring whirlwind of changes

One big one being you and Tanjiro having to stop every other pillar (and former Tengen) from trying to murder him

His change of heart was something that left him with little words to say to anyone or say anything for days on end, even with Sanemi trying his damnedest to not murder Kokushibo where he stands

The only pillar that had helped you with trying to change Kokushibo back to human when you brought it up was Shinobu, Tanjiro, the kindest soul you've met here, helped as well, even Mitsuri was eventually on board cause of it being such a true act of love

You had actually succeeded after some years of working with them and Kokushibo helping take care of the three young pillars and some of the other older pillars themselves

It was painful when none of the other demons wished to change and you had to hear about their deaths

Kokushibo knew it affected you and at night when you would cry about losing some of the good ones he would hold you close, cradle you gently till you would either settle down after a bit or fall asleep

When the time to take the reverser you and Shinobu made it changed his appearance entirely flakes fell off of his face and arms like whisps of fall leaves

His skin tone a human color again and his 6 eyes now only two with a vibrant red color filling them as he was tackled into a hug by you laughing a crying

He sat up with you clung around him as he smiled and patted your head with a small chuckle of his own while sharing a warmed look

His first steps outside was a mental struggle on him, he's not been in the sun for years an years and now he's about to step into the thing he despised

When he stepped into the sun without bursting into flames he merely looked back at you with a small smile and held his hand out for you, you ended up just taking a walk around the butterfly mansion and was even found sharing a nap in the sun

Though fixing and making his sleep schedule regular again was a hassle in the making but it led to some fun moments

Overall when it came to the final days of defeating Muzan Kokushibo was a big help and even trained the newest 3 pillars there, even if it was beyond training with the others, it did good

When peace was finally successful between it all and Muzan gone it was really the greatest coming years for you and Kokushibo

Your own home, land, still getting up early and training for Kokushibo, old habits die hard, delicious meals throughout the day, enjoying tea again, even starting your own chapter when you decided to finally have your own kids adopted or biological

It didn't matter, you had a true life with someone you call your lifetime partner, your forever soulmate, no matter what ❤️

You turn bad for him...

The more and more you hung out with the upper ranks and some of the lower ranks the more you started considering them friends and family to you

It was odd for Kokushibo, but nonetheless you were happy so he left it alone with some warnings in tow he gave you about getting close to them

You listened, you always did, especially when visiting the others in the fortress when he wasn't around

Times like that Nakime and Akaza would watch you carefully in his absence

Only ones they knew that Kokushibo dislikes around you is Gyokko, Douma, Enmu, and sometimes Rui

They were the only ones that he would draw a line with

And speaking of which the more you stayed and helped and your bond with Kokushibo grew

The one thing that scared you into making such a big decision is when your home was invaded by a Slayer, a not so friendly one at that

He was onto you 'hiding a demon' in your home and it resulted in you being cut along your side when you kept denying and shakily standing your ground against him

Just as you hit the floor, holding your side the slayer in front of you sprayed blood from his shoulder then pierced with a blade littered with eyes on it and behind him, a very pissed off Kokushibo

Once the slayer was dealt with Kokushibo was quick to make his way to you and take you to the kitchen to wrap your wound

It wasn't anything threateningly deep so he was able to patch you without anything severe

You didn't say anything while he gently tended to your bandages before you made him stop in his tracks

"..I want to be a demon.."

"No, you don't"

"And why can't I?"

"Do you enjoy the sun?"

"I do at times."

"Do you like your flowers?"

"Yes, you know that."

"Do you like being human.."

"I- what does that have to-"

"Do you cherish your humanity?"

"..."

"...Only... Only when you decide to leave what makes you human behind.. Will I turn you into a Demon and I will be sure to tell Muzan that too."

Kokushibo doesn't understand why you want to suddenly become a demon

Was it to protect yourself? No, you can protect yourself fine thanks to him teaching you

Over the course of a few days you and Kokushibo were rather... Distant

He didn't understand it, why give up one of the things he loves about you, you know this

But why is he also so conflicted? He used to entertain the idea of you both being demons a lot when you first initially had settled in with one another

It's weird for him rn, he likes that your human and can enjoy most things he can't, on the other, he knows that if you were to become a demon he would be able to worry a whole lot less about your well-being and you would be even more able to protect yourself

Eventually... You two are sitting on your back deck looking over the nights silvery cast that was set over the ground

Neither of you said anything, even when you climbed into his lap and had a hearty sigh expel from your chest

"I just... Even if it was a minor attack for you, I can't fight slayers, or demons, I'm not strong enough to wield a blade and without that, I can't fight them."

"I am aware of this, I have offered you plenty of times to learn different weaponry that can be specially curated into a weapon for you by a blacksmith. Was the offer not appealing enough?"

"It was... Very appealing...but there's a lot more at risk of becoming part of the corps than turning. You can recover from things that we can't, no matter the best doctors or medicines. I am also aware of the risks of becoming a demon..though there are far less cons that show their differences too."

Kokushibo rose an eyebrow as he shifted you in his lap, he grabbed your chin and made you look up at him

Even when he did this you avoided his gaze....you never spoke this much or sounded almost as passionate as you have unless.... There was another reason...

"Speak with your chest, I know that there's another reason as to why you want to change. So tell me what it is."

You looked to meet his gaze for a split second, locking with his middle set of eyes before you grabbed his hand on your chin. You moved the hand to your chest over your heart while you leaned against his chest

"You..."

"Elaborate.."

You took a deep breath again and looked around your yard before shutting your eyes

"You had said and I had agreed back when we first made our promises... That even if I were to die and you go on living, you wouldn't love another soul, nor turn your back on my aging body."

"I did, and I will honor those promises for as long as I am here and continue to do so since the day I made them. Is that your point?"

"My point... Is that I don't want to leave you eternally alone. I would rather be a demon and lose my humanity just so we can be together for as long as we both live, that is my point."

For the entire time you've been here like this, after the passing seconds of what you said hung in the air for him to mull over

And then... He smiled

"Then listen to me well My Moon.."

He removed his hand from your grasp and took his blade out, running it along his wrist in a slow fluid motion as his blood began to run and drip to the wood floor below you

"If you choose not to ingest my blood, I will remain. I am a man of my word and my promises to you will never be empty or forgotten. However... Do you choose to ingest my blood, what you said before that you 'Don't want to leave me eternally alone" will become your promise to me that I will expect you to honor, do you understand My Moon?"

He held his arm up to your eye level as it continued to drip and stain both of your clothes as he held it.

You looked at his arm watching each drop of blood drip from his arm

You looked back at him and his expression, a soft smile was spread across his face, but all of his eyes showed a waiting fury for what your decision would be

No matter the choice... he would be at your side

You moved and pressed a soft kiss to his cheek as you turned and gently took his arm closer looking at the cut with your final decision

"Till Death Do Us Part"

You moved the cut to your mouth and slowly with a bit of a sour look on your face as the tangy metallic taste flooded your mouth and soon your entire body

Before you could scream or yell in paint and thrash about, Kokushibo clasped a hand over you mouth to muffle any noise you made

His other arm thrown around your waist pinning you back against him and pinning your arms at your sides

You squirmed, shook, thrashed, and screamed against his hold and hand while he just held you like it was nothing

He smiled while watching you, his eyes softening a bit while he looked up at the moon and forced your head against his shoulder to make you look at it as well

"Till Death Do Us Part, Forever One"