one shot (KNY) x reader x upper moons x muzan

muzans old friend

You are reincarnated as Muzan's
old friend, and you remember your
past life and your friendship with
him.
You are determined to help Muzan find the blue spider lily, as you believe that it will help him achieve his goal of becoming perfect and
stop him from causing harm to
others. You and Muzan embark on a journey together to find the blue
spider lily, facing various challenges and obstacles along the way. As you travel with Muzan, you start to question whether his goal of becoming perfect is really worth the harm he has caused to others, and whether there is another way for him to achieve his goals without hurting- Eventually, you and Muzan find the blue spider lily, but you are faced with a difficult decision: should you give it to Muzan, knowing that it might help him achieve his goals but also cause harm to others, or should
you destroy it and prevent him from using it?

So without thinking about the consequences you give blue lily to Muzan because you can't see your friend suffering anymore ( what a loyal friend 😭) - After giving Muzan the blue spider lily, you notice that he starts to
change. He becomes more aggressive and unstable, and you
start to worry that you've made a
mistake( ITS NO USE TO CRY OVER SPLIT MILK 😂 ) Muzan's transformation continues,
and he becomes more and more
powerful, causing destruction
wherever he goes. You realize that
you need to stop him before he
causes any more harm BUT YOU FAILED to stop him You decide to join the Demon Slayer Corps to fight Muzan hoping to find a way to stop him and make him return to normal. The Demon Slayer Corps accepts You into their ranks, and you start training yourself so you can stop muzan and bring him to his normal self ( *they don't know about your relation with muzan as they think you r also one of muzans victim ) After many years you train your self till you reach the rank of Hashira You also develop your on breathing style You don't have any relations with hashira as they r only your partner in eliminating demons They also don't see you close to them. So you guys r both neutral. You joins Shinobu As she trains you about making chemicals. You don't like how Shinobu treats giyuu you always complain to her but she ignores you giyuu has finally find someone who can help him to stop Shinobu 😂

In past life:-
You met muzan while you was sick and when you run awayed from home He found you standing under cherry blossom. When he sayed you standing there he asked what was you doing there standing at night and not knowing the danger about demons roaming here at night. But you ignored his question and asked MR aren't you a demon also. He was shocked when you said that. Then he said aren't you afraid that I will kill you you replied no sir if death is my fate then I will accept it but I don't want to die yet I had to travel the world yet. He liked your confidence when you talked to him knowing that he can kill you without thinking but you didn't flinch. So you said to Muzan can we be friends He was so shocked and then he accepted your offer and from that moment you guys became friends and went on a journey. Even he enjoyed your company with him. So muzan told you about himself and you told about yourself to him. You even helped him In hunting food. As he helped you. As the time went years after years past. One day muzan was not at home so you decided to walk at night. As no demon can come near you because you being with muzan so you was carefree about worrying about yourself. As you was walking you heard someone knows about muzan wear about and are going to attack him As a best friend you don't want your friend to be captured you decide to kill that person but you didn't knew he was not the only person standing there but other people were also standing there without thinking you attacked the person you injured that person heavily but when other people ( his teammates) arrived and they started to attack you due to that. You started to loose your grip on your sword 🗡️ and they took this moment to unarme you and captured you. Then they bringed you to there headquarters and try to question you why did you do that? Why was you protecting that demon? You didn't answer them. When they found out that you are not going to tell them anything they started to torture you. So they didn't knew that monsters can't kill you due to Muzan protecting you they through you Infront of the demons As they throughed you Infront of it to see that you can tell them your relation with muzan and his wear about. But you went Infront of the demon you knew that how much muzan was desperate to save you from them but he can't come here due to wisteria here and some other reasons as he had already send some upper moons for search of you. You decided not to make your friend more worry about you so you decided to tell demon ( as you know muzan can read every demon thought and can see from there eyes) you went Infront of demon and whisper in his ears to tell Muzan when he heard muzans name he became so frightened and hashira were so surprised how did that happened how did you not die yet by the hands of that monster. You told the demon Tell to muzan that I am very happy with the time I spend with him for being his friend and I don't want the hashiras to find about your wear abouts and I don't have regret meeting you. As when the hashiras heard your conversation with demon there mouths were wide open before you told More information about them and there plan to attack him they decided to kill you as they were regretting why they let you live so long. Before they attached you you decided to kill yourself as you was so weak to fight back. When muzan seed that from demon eyed he was so sad and angry at the same time losing his best friend. Before you died he also heard you saying that if I have next life I will then again went to be your friend. In anger of loosing his best friend he killed the whole city in which he and you were hiding. He made sure to kill every hashira that was there standing seeing you die and he waited for years for your reincarnation

End of past life

Final battle:-

As you guys had defeated whole upper moons except kokushiba (as u stood there told kokushiba that you don't want to fight him and just wants muzan to come back to his normal to your surprise he didn't fight u He also told you to stand there and not to interfere in his battle against hashiras you accepted his request and stood side way ) know three hashiras were on there way to kill him
As you got tired you set down and ask kokushiba if he had tea with him to your surprise he nodded and told you to sit at his place there he had tea Muzan sama had told him that when you met his old friend give him the tea he liked very much.As you was drinking tea you heard sanami voice yelling at kokushiba with gyomi following him and attacking kokushiba. He was surprised to see you sitting there and doing nothing He had already guessed that you had betrayed them As he started to Tum towards you to kill you. But kokushiba stood Infront of you and stopped sanami from attacking you. As you see kokushiba head falling hashira bearlly killing him but soon his body started to regenerate but you sayed that when he stopped his formation and decided to die instead. But you was also confused when you saw there was a spirit standing next to kokushiba.
Sanami came running towards you to kill you without listening to your reasons So you decided to ignore him and started to run but soon you heard infinity castle starting to collapse you shouted NAKIME. But she didn't respond to your call so you though that she was dead.

Finally it part one ended but part 2 will come so wait
As I am going to revise my pre board bye take care

1468 words