You were Kidnapped by The demon king, a powerful being who's almost perfect.. And He has plans For you, Kokushibo is his Favourite and Douma not his favorite but He Let's him live because his powerful. 

~Three Powerful Demons

In this Au There are demons MerDemons lurking in the depths of the ocean there leader muzan is a Powerful Merdemon and is there king. 

~Mermaid Au

There Very Hard working women's and they take the Train home and They Are twin sisters with Feminine Features×

|Feminine Twin Sisters|

They were Demons Disguise as Humans.. They blend in right away and You have no idea what you got yourself into.. Muzan is a Powerful CEO in a Company and Kokushibo is his Business partner.. They were very rich and Powerful Demons

~Modern Au 

Demons who are loyal to muzan and Hates Demon slayers. 

They are Demons in this Au, Powerful ones

a Powerful demon and Jealous and Envy of his Brother.. He wants to surpass him. 

•You encountered Uppermoon 1•

He is heartless, he is unlike his old self. He used to be kind, helpful and caring but now he shows no mercy towards humans. He has no interest in fighting weaklings and he only devours strong slayers that he had came across. He doesn't care of he's fighting a man or a woman, because countless men and women didn't make it alive when they're fighting him. He is the strongest, the real demon. He can be a demon king when he wants to kill Muzan, he can be whatever he wished to be.

--Opposite of His Original self

Upper Rank One of the Twelve Kizuki, and the archenemy of his younger twin brother, Yoriichi Tsugikuni.

Mysterious, composed, grim, serious

infinitely ideal being” and is narcissistic to the core, Thinks he is a Perfect being and a Powerful Force, Thinks he is Hot and Handsome. Have the Power to shape shift. 

psychopathic and power-hungry individual.

menacing and cold-blooded disposition. Muzan is cold-hearted, ruthless, intimidating, and exceptionally intelligent. He sees no value in any humans he has encountered and shows little value in his own subordinates.

|Your Average Demon King|

Demon king and His Accomplice Making out. 

~You caught them making out

They were the Popular Brothers michikatsu is a Famous Lawyer Working for Muzan and Yoriichi is a Famous Model. They are Quite Mean and Cold. But if you get to know them they're actually Kind and soft. 

|Modern Au|

Feisty, your pets😍, Have powers to Transform into a Human~ They're Hot and Beautiful! /Handsome

Animal Au-

 Upper Rank One of the Twelve Kizuki archenemy of his younger twin brother, Yoriichi Tsugikuni, Envious of Yoriichi and Strives to Become Stronger than him

𝕮𝖆𝖑𝖒, 𝕾𝖙𝖗𝖔𝖓𝖌, 𝕮𝖔𝖑𝖉, 𝕸𝖊𝖆𝖓

They are Powerful demons great at disguising,  They are Very Hot and Sexy and Very Very Tall.. Muzan is Capable of Shapeshifting into a Male to female... His Accomplice Kokushibo is a Skilled Swordsman and A Very tall men.. 