The Dark Past and New Desires | Yoriichi x Michikatsu x reader

Hint

   Third person pov,
Muzan began running without turning to see who it was as Name chased him with malicious intent.
   "Nakime!" Muzan yelled and before Name realized, she and Muzan had been transported to the infinity castle.
      It was mind blowing witnessing the abnormal interior as Name focused on Muzan all the while noting how things were.
   "Nakime, get that slayer out!" Muzan ordered the one eyed biwa playing demoness to which she obeyed.
    The sound of the biwa was heard and Name was back to the same alley she encountered Muzan.
     "Interesting" she said to herself lowly.
     She replayed what just happened in her head and smiled to herself since she knew the demon slayer corps now has an upper hand. They know where Muzan hides and the nature of the place.
   "I should go tell the master" she thought and quickly made her way towards the Ubuyashiki mansion.
    As she ran, so many thoughts went through her mind, she wanted to do so many things but there was s only one of her.
   She wanted to kill Muzan and end all demons, she wanted to save the master, a part of her wanted to change Kokushibo back to Michikatsu since she realizes even after being reincarnated, she was still in love with him.

    Infinity castle,
"How is he still alive?!" Muzan asked Nakime.
   "After centuries he is still alive, perhaps reborn?" He added
    "Muzan sama, are you talking about the slayer you asked me to send away? If so, it was a female" Nakime told him respectfully.
   "What?!"
  "A female?!" He asked in utter surprise.
   "Yes, Muzan sama, a female slayer"
 
     Muzan stood still as his veins bulged. He couldn't believe he ran away from a female slayer thinking it was Yoriichi.
    If she tells the corps, they'd come find me, but then again I'm stronger than them all there is no need to worry.
   Maybe, I could track her and use her to find the demon slayer corps, with them out of the picture, finding the blue spider lilly will be a piece of cake.
     Muzan thought to himself and asked Nakime to summon Upper moon one.
    Another strum of the biwa could be heard and Upper moon one appeared before bowing to his master.
   "Kokushibo, I need you to follow a female slayer. Her scent still lingers..." Muzan told him as Kokushibo smelled the air a bit and nearly stood up in surprise.
    It was Name's scent and he still remembered it after their last encounter four hundred years ago. He didn't want to jump to conclusions and just assumed Name might have had a descendant who inherited her sweet scent.
   "Go, find her, know where she lives, her routine and if possible, use that to find where the corps is, dismissed" Muzan finished as Nakime teleported him to his office.
     Now, it was Nakime and Kokushibo alone. Nakime had developed feelings for Upper moon one and saw his brutal, ruthless behavior as manly and admirable yet her scarred past made her keep her feelings to herself.
    "Take me.... to my ....favorite forest." He ordered her and with a strum of her biwa, he disappeared.

   Kokushibo's pov
  (Name), could it be you're alive? or perhaps you have a descendant?. You must have had a descendant and I wouldn't be surprised if Yoriichi was the one who got you pregnant.
   It should have been me. Why does he get everything, every good thing? I can imagine all the sweet moaning sounds you made underneath him. How you'd beg, moan, scream his name when it should have been me.
   There is no hope of we ever meeting in the afterlife or being reborn, I already don't believe in that nonsense, but if I find your descendant I'll make sure she gives me the sexual pleasure you gave Yoriichi.
    It is almost dawn, day would follow soon. I'm going to find a human to devour.

      🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹

   It was near daybreak when Name arrived at the Master's house. He was asleep so the exotic beauty decided to inform him when he awakes. In the meantime, see decided to get some sleep or read a nice book, which ever came first.
       Lazy breathing, first form, time skip.
   All hashiras were present before the Master dealing with Tanjiro and Nezuko's case. ( You know how it goes if you read the manga or watch the anime)
  After the Kamado siblings were taken to the butterfly estate, the master began.
   "Well my children, we have another topic for discussion. I was informed by a crow of Name's incredible feat, she killed all demons in a village in only one night, plus, she has more info for us..." He said
   "Name, would you please come out" Kagaya asked as she came out from the shadows with a new mask covering her lower face and her hair in a nice bun.
     The standard demon slayer uniform she wore looked nice but she couldn't wait to become a hashira and have a customer made uniform.
  "Now Name, please tell us what you have" he added as all focus was directed towards her.
    "I met Muzan Kibutsuji yester night on my mission in town. More like I saw him and wanted to finish him off" she said flatly.
   "Centuries ago, the creator of breathing styles, Yoriichi Tsugikuni, encountered him and almost succeeded in killing him but the coward managed to escape, ever since then he has remained Muzan's greatest fear"
     "Me being Name and good at mimicking voices, I mimicked Yoriichi's voice which scared the demon king as he ran and I chased after him"..."he mentioned a demoness's name and a strum of a biwa was heard before we both got teleported to some sort of dimension, which might be were the strongest demons are"
   "How is this dimension thing like?" Kagaya asked as her narration piqued his interest more.
    "Glad you asked. The place seems to be upside down and crazy in a way, the ceiling is the platform, the stairs are on the ceiling... and I think the biwa playing demoness controls the place using her biwa because he ordered her to send me out and she used her biwa. The place just bends all laws of physics " Name finished as all her words began to sink.
   "Interesting my child, you've done well. At least we have some information about the demon kings hide out" Kagaya praised her.
   "But master, won't the demon king go into hiding if he thinks his greatest fear has risen from the dead?" Shinobu asked.
   "I doubt it, at one point or the other, he'd figure out it was just an ordinary slayer"

   "Which reminds me, since Name managed to kill numerous demons and get close to Kibutsuji Muzan even to the extent of chasing him to his hideout all in one night, she has automatically been promoted to hashira" he said with a smile as Name looked indifferent while the other pillars looked shocked.
   "But..b-but Master, she hasn't killed a lower moon or fifty demons" Tengen argued to which the Master raised his hand to silence him.
    "Actually, I was told she killed all the demons at the final selection, ......plus a dozen more and she was a pillar in her past life and still has some of her memories which...... could be useful to the corps, she also attempted to kill the demon king which in it's rights qualifies her to be a hashira" he explained as Sanemi gritted his teeth.
     The whitette didn't expect the 'bitch' who walked up confidently to the master saying she wants to be a hashira to actually get the spot.
   "With the exception of Name, you're all dismissed" Kagaya said as they all got up.to bow before leaving.

   "Name, congratulations on becoming a pillar .."he began.
    "Thanks" she said flatly.
"You will get an estate to yourself along with some kakushis to maintain the estate for you. Plus, you will get a new uniform and some privileges plus increase in pay" he told her as she simply hummed in response.
    "Is there anything you would like ?" he asked.
  "Yes, I would like a western style estate if it's not too much trouble, and I would like to help cure your sickness. I too had a chance to finish off Muzan centuries ago but I too failed, if not you would have been living a happier life, forgive me for that" Name said modestly and apologized.
    "There's nothing to be sorry about, may be the gods gave you a second chance so you'd help eliminate demons once and for all, I believe with your presence, Muzan's existence would cease to exist" Kagaya told her with a warm smile.
    "I'll give you the key to your estate two days from now Name, take care of yourself " he added as Name thanked him genuinely before getting up to leave.

    "Amane, please describe Name's appearance" Kagaya told his wife.
    "Well, she's extremely beautiful, quite exotic if I may, her hair is a bit kinky which has been put into a bun. Her eyes are a mixture of teal and green, she hides the lower portion of her face in a mask" Amane explained.
   "No physical scars?"
"None I can see"
   "Her aura, it's something, and her fighting spirit is concealed. She has a sixth sense, I can feel it, with someone like her guiding and training slayers, this era of demon slayers will end it all" Kagaya said optimistically as he enjoyed the fresh air.