May the Stars Guide You ~ KNY x Reader

Sincerity

"Y/N, we need to talk!" Growled Muzan, his menacing aura on full display, yet you gazed up at him seemingly unaffected.

You grabbed your gourd and took one final swig, drinking every last drop of the blood wine.
"Here Gyokko." You tossed the empty gourd directly at your fellow upper moon's head; a loud crash ensued as it made contact with the gourd shattering.

You couldn't be bothered to listen to the whining of your inferior colleague and just turned to your boss.

"Oh Lord Muzan, for what do you wish to speak to me for?" You asked while simultaneously saying something similar in your second brain.

His crimson eyes glared at you as he opened his mouth.
"You killed the previous upper moon three? Why is that?"

You thought to yourself for a while before speaking.

"He challenged me to a duel, and I killed him as expected and absorbed him. Simple as that." You answered, looking down at your sharp nails.

"Really? However..." You sensed something aimed towards you and instinctively grabbed it. A large mass of flesh with eyes up and down its visage and a large mouth with sharp teeth wanting to bite you.

If you hadn't prevented the jaw from opening, you were sure more teeth would have been visible.

"However, did I give you permission to kill them? They had their uses." Muzan questioned you, and before you could retort, he spoke again. "Moreover, you had culled the lower moons before, had you not? I can accept that, but this time is different."

"Lord Muzan, number three's abilities were good; having their ability to get insight on people, demons, and slayers was definitely swell. He was certainly helpful when it came to culling good slayers before they reached their peak."

You briefly paused for dramatic effect.

"But let's admit that they were only that number because they joined early. Their growth had stagnated and couldn't be pushed further. Should a spot be wasted like that?"

You spouted bullshit about being concerned about the upper moon rankings like it was a second language.

"If Hantengu stopped being a snivelling runt and challenged three, I'm sure he could have defeated him. However, me being the one to defeat and absorb him is much better for you." You stated, concealing your intentions with a proposal. "They had too small of a range, but me? I could do so much more than that."

You stared up at him, still holding both hands on the flesh thing's jaw. You watched as countless thoughts went through his head before you felt the pressure from his attack weaken.

"I see, such planning ahead. I presume you saw his future uselessness." Muzan asked.

"Of course, now that he has been absorbed by me, I can use his abilities in a more effective manner." You stated. "Though the lower moons were different. I simply was disgusted by their existence and felt better lower moons could be placed."

For once in the entire conversation, you hadn't been completely lying. You truly believed if you had their ability, you'd get stronger.

'The ability to assess others, determine maladies, and help give insight into improving one's abilities, including demons.' You thought to yourself as you barely managed to stifle a laugh. 'What a doctor upper moon three was, knowing the best way to examine others... so his victims suffered more.'

"Making use of his abilities is good, however..." Muzan walked slowly towards you, each step of his echoed in the silence. He leaned in, his forehead almost pressed against your own, his crimson eyes reflecting in yours. He opened his mouth, letting his breath escape.

"Who gave you permission?" He growled in a low voice. "And why do all this?"

You felt the pressure on you intensify as you realised that he truly wished to scrutinise you. That last question flagging up every danger flag in sight.

He wasn't wrong to question this. Out of every single demon around, you were the only one with a reason to despise Muzan. And he knew that. Your first meeting was a battle to the death, a battle that left you ruined in every way possible.

Yet you acted like a model employee. Claiming to cull the weak so stronger demons could exist, using your blood demon art to help Muzan expand his influence. All of it benefitted him.

And that was suspicious.

"I simply..." you began to speak. You kept your eyes locked with his. "I love my brother and wish for him to be happy. If joining you helps him achieve his goal, then so be it."

An audible gasp left Kokushibo's mouth as he turned to you with a complicated expression.

Your answer was plain and simple. And frankly, most importantly, believable. Muzan could be well aware of your dislike for him, but your love for your brother would outweigh that.

You would stick around as long as Kokushibo was there. That makes you sound dependent.

"Good." The demon king muttered as he back away from you, a slight smirk gracing his lips.

It made you sound easy to control. To keep on a leash.

"Yes, Lord Muzan. I love my brother, that's all. You can always trust that a person's emotion holds no deceit." You spoke in an attempt to reassure him.

"You are aware that you are essentially telling me how to use you, right?" He asked. From his expression, you could tell he was surprised; most people wouldn't reveal their weakness. Even demons.

You just gave a quiet smile before nodding.

He analysed you for any falsehoods yet found none. He began thinking over your explanation for killing several moons. "Also, your decision was not a bad one. I had planned to remove that guy anyway." Muzan explained.

"Of course. Plus, this is a perfect opportunity for the rearranging of the upper ranks." You added before turning to the one demon sitting down cross-legged with a smile on his face. "Isn't that right, Douma?"

Your colleague just turned to you with the same smile plastered on his lips and a tilted head. "Mistress Y/N, I'm not particularly sure what you are referring to."

"Really? Well, then what about that pair of siblings from the entertainment district you turned into demons?" You asked as you casually walked over to him and Akaza. "I mean, if you're going to be Upper Moon two, you are going to find a replacement for number six, and the two you cultivated into demons would surely bring you favour with Lord Muzan."

Revealing that you knew the existence of Daki and Gyutarou was definitely a shock to Douma, but hearing Douma becoming Upper Moon two alerted Akaza.

"Hold on, fortune teller! What do you mean by that?" Akaza interrogated you. You almost felt bad for him because, out of all the Upper Moons, you liked him the second most. Mainly because he didn't eat women and generally pissed you off the least.

You patted his shoulder and gazed at him with almost the same amount of compassion you would give to a human.

"Ask that rainbow-eyed bitch." You simply said before just leaving to go sit down without any further elaboration.

Akaza watched as you left before turning to Douma, the veins in his head bulging out and his fist clenched.

"Douma... explain."

"Well, Lord Akaza, I believe I had recently become stronger and thought to myself, Why don't I beat you and take your position?" The rainbow-eyed demon happily (only in expression) explained, his smile not once waning.
"Isn't this great? We can be next to each other in the hierarchy.

Without any warning, Akaza threw a punch directly at Douma's skull. However, instead of connecting with his face, a loud clang could be heard.

"Wow, Lord Akaza, what a nice punch!" Douma cheered as he looked past his steel fan that he used to block Akaza's attack.

Without blinking, the cheerful demon reflected Akaza's hand before swinging his fan. A blast of ice and snow coated the area in front of him.


While the battle for the second spot went on, you wandered over back to Muzan.

"My Lord, if you have ascertained that I'm of no threat to you, then may I be on my way." You asked.

Without looking away from the battle between two of his demons, he simply nodded.

You began to walk towards Nakime to ask to be released when you felt a hand on your shoulder.

"Y/N." A voice called from behind you. "I'm... sorry."

"I know Kokushibo." You replied. You could feel the guilt emanating from your brother. "But you aren't the one who made me a demon."

You turned around and gave him a hug.

"Like I said before, emotions, whether good or bad, are powerful things. They can bring out hidden strength and things one didn't think they were capable of," you told him. Kokushibo understood this well; the depths of jealousy drove him to.

"I'm off now. I'll... try and visit more. Ok?"

"Yes Y/N." Kokushibo released you from the hug. "Goodbye."

Right as you were to turn to Nakime, a voice shouted out from the clash of ice and frost.

"Goodbye Fortune Teller!" Shouted Douma as he was defending against a furious Akaza. "Let's do a collaboration between your shrine and my cult!"

You chuckled at that and waved while gleefully saying.
"Fuck off, Douma! No way in hell am I letting you near my shrine. I hope Akaza beats the shit out of you. Go Team Akaza."

And like with a strum of a biwa, you found yourself back in your temple.

———

You giggled to yourself, remembering everything you said at that meeting.

You left your personal room and began to walk down the halls of your shrine. Eventually reaching downward-leading stairs that were sealed with a trapdoor and chains.

Grabbing a key you held with your robes, you slotted it into the padlock and unlocked the chain. Casting it to the side, causing a loud click sound, you walked down the stairs. Each step echoed and ricochet off the stone walls.

An old wooden door stood in front of you. Despite its large size, you pushed it open effortlessly and walked inside.

The room was dark—not a torch or any light source insight. Luckily, due to your demonic physiology, you could see perfectly.

The room was mostly empty with the exception of a desk with notes written and seven barrels with tubes connecting them to the back of the room.

You picked up the notes; however, the sound of muffled cries from the back of the room stopped you from continuing your reading.

"Oh, are you reaching your limits?" You said it with an uncomfortably calm and serene yet cold voice.

"There was a meeting concerning the disappearance of an upper and the lower moons. Of course everyone knows I did it." You kept talking to the back of the room.

"Luckily, I wasn't punished. It would have ruined my plans if anyone got suspicious."

"Do you want to hear a quote from my defence? You can always trust that a person's emotions hold no deceit." You snorted at your words. "Oh, how true they are. Right?"

You finally turned at the six beings chained upside down, hanging from the ceiling. Each of them was gagged, blindfolded, and their ears plugged with several tubes stuck in their bodies that led to each corresponding barrel.

"What am I saying? It's not like you can hear anything, lower moons." You said as you felt one of their stomachs, their skin felt drained of all blood.

"Did you know demons can die if their healing abilities have been overtaxed? Yes, it's true; if a demon can't replenish the blood they lose fast enough, then they die." You smirked.

"And did you know that demons can share their abilities through their blood? A future lower name, Rui, does this to."

"Additionally, the blood in my brain has the uniqueness of being free from Muzan, so I wondered if I can create demons with myself. One that Muzan can't track." You explained.

"Now what would happen if I combined the two? I make a demon entirely made of untainted blood and give them the powers of a lower moon." You said as you (figuratively) looked down on the hanging lower moons.

Though you doubted one could have more than one blood demon art outside of an upper moon like yourself, using a lower moon as nourishment could definitely enhance their strength.

"Many would leap at the chance to have your abilities for revenge. Many want death to Muzan and are willing to change themselves to assist the slayers in their pursuit." You continued to chatter as you looked down at your notes.

A blacksmith. A weaver. A painter. Three people are willing to become demons for revenge. What would happen if they developed blood demon arts and used them to assist humans?

Enhanced weapons. Enhanced clothing. Illusions. All could be within the grasp of the demon slayers.

"When I said emotions are powerful and can make someone do things they wouldn't, that emotion wasn't love." To say as you placed your hand on the table.

Your hands trembled as you gripped the desk hard, and a loud cracking sounded off. Looking down at the table, you saw several splinters in your hand and a broken desk.

Your eyes appeared crazed as veins were incredibly visible in your body. Your teeth and nails grew longer and sharper, perfectly ready to kill someone. For once, you looked truly demonic.

"Oh Yoriichi... Fumihito... Everyone, give me time," you whispered to yourself.
"I will kill you, Muzan. If it's the last thing I do."

The sincere emotion you were referring to was hatred.

~~~***~~~

[A/N: Here's the chapter. Enjoy! Updates may be slower as school has started and stuff, but don't worry I will update. Frankly I write each chapter in a moment of focused concentration at once so it shouldn't change much. Also please let me know of grammar errors. Thanks. Also unrelated I got Kafka's and Black Swan's light cone.]