Y/n is an identical copy of her birth mother. (A picture of Y/n is above).
Y/n will be five years older than Hinaki and Nichika; who were 8 during the final selection. Kagaya was 23 when he met Tanjiro. While Y/n was 13 when she met Tanjiro. 13-8 = 5. 23 - 5 = 18. Kagaya will be 18 when he took her in.
Y/n's bio Mother: Unkown and deceased
Y/n's bio Father: Unkown
Other bio family members: Unkown, deceased
Ages of importance:
Age when taken into the Ubuyashiki family: 6 months
Age when Hashira: 12
Age when Tanjiro and her met while at the Hashira meeting: 13
Age when the accident happened: 14.
Y/n created her breathing styles at 10.
Her Breathing styles are Color, Animal, Gemstones, and Time.
Breathing Styles: Ordered from oldest to youngest.
Color Breathing:
First Form Red: The user creates five red-colored soldiers that aid them. (For an entire battle)
Second form Orange: The user's energy is completely restored
Third Form Yellow: The user is able to raise the spirits of their allies
Fourth Form Green: The user is able to control the environment around them.
Fifth Form Blue: The user is able to create whatever they imagine for a limited time.
Sixth Form Purple: The user is able to multiply their power by 10.
Seventh Form Pink: The user is able to bring inner peace to those around them.
Eighth Form White: The user is able to easily protect the people around them.
Ninth Form Black: The user can easily hide in the shadows.
Tenth Form Gray: The user can relax their enemies.
Eleventh Form Rainbow: The user can use all their forms at once.
Animal Breathing:
First Form Cheetah: The user's speed is increased to the point that they're practically invisible. (Only applicable for one attack)
Second Form Crab: The user hits their target and the hit is performed on the inside.
Third Form Mantis Shrimp: The user's punch becomes stronger and faster.
Fourth Form Kitefin sharks: The user can see in the dark (For one battle)
Fifth Form Grizzly Bear: The user can easily decapitate a demon.
Sixth Form Slow lorises: The user poisons the demon; the latter dies within minutes.
Seventh Form Raven: The user appears not to move in front of the target but is actually behind the target.
Gemstone Breathing:
First Form Amethyst: The user gains clarity during the battle
Second Form Aquamarine: The user releases all anxiety and fear in battle and gives insight to the user on their opponent's moves.
Third Form Citrine: The user's endurance is restored
Fourth Form Garnet: The user is able to create friendships with her enemies, out of true sincerity.
Fifth Form Onyx: The user slashes their sword once but the cut comes out like a tiger scratch.
Sixth Form Opal: The user is able to control all their emotions.
Seventh Form Peridot: The user can bring someone back from near death until medical help has arrived.
Eighth Form Tanzanite: The user is able to turn demons/curses back to humans.
Ninth Form Topaz: The user is able to calm others' tempers.
Tenth Form Sapphire: The user is able to predict all of their opponent's movements
Eleventh Form Rubies: The user brings misfortune to their enemies.
Twelfth Form Emeralds: The user puts their enemy/target into a peaceful dream. If the target is a demon the user will give them a painless death.
Thirteenth Form Actinolite: The user's awareness increases ten-fold
Fourteenth Form Diamond: The user is healed from all poisons.
Fifteenth Form Moonstone: The user gains clear thinking, inspiration, and receptivity.
Sixteenth Form Turquoise: The user will succeed in their battle, no matter who they are fighting.
Sixteenth Form Turquoise Version 2: The user can heal their allies.
Time Breathing:
First Form Fast forward: The user can speed up time to after they attacked so that they look like they haven't moved.
Second Form Pause: The User freezes time for an unspecified amount of time.
Second Form Reverse Unpause: Time goes back to normal but others are confused.
Third Form Skip: The user dodges a series of attacks in a few seconds
Fourth Form Indefintacy: The user makes their opponent question themself.
Fifth Form Rewind: The user sees what has happened before they got there.
Abilities:
Genius
Nigh-Absolute Regeneration: Only second to Muzan
Unnatural/inhuman speed, strength, reflexes, and stamina
Combat Form: Y/n has a combat form similar to Muzan's. A dark-blue scale-like mass covers most of her body (prominently on her limbs, forehead, breast, and lower half.) featuring sharp-toothed wide mouths all over her body.
Demon Power Nullification: She can create life-threatening wounds on demons and curses
Unlimited Stamina & Endurance
Is able to be out in the sunlight
Extrasensory Perception
Biological Absorption: Y/n has displayed the ability to absorb, assimilate and dissolve organic and inorganic objects.
Demonic Blood: Y/n's blood has been shown to cause a human body to self-destruct into one giant mass of flesh before disintegrating into ash. The same would also presumably happen to a demon/curse if they consume/absorb any amount of blood. It has also been seen to act like a poison and destroy the human body's cells shortly after they enter.
Demon/Curse Manipulation: Y/n can control demons and curses to a certain extent.
~The rest are locked~
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The Demon King's Daughter
FanfictionY/n Ubuyashiki has a strange life. She was taken in by the Ubuyashiki family as an infant and has since created 4 breathing styles, befriend multiple demons, excluding Nezuko, and is a half-demon. While creating a fifth breathing style something go...