An edited resubmission to my fanfiction of the same name. Kibutsiji Muzan is dead, everyone rejoices, including the demons that were freed from his tyrannical rule. But millennia later, when signs of his presence resurfaces, the ones who remain from his era, now in a society of Heroes and Quirks, need to face their past, and the risks of their secret being dragged out into the sun.

Muzan Kibutsuji has finally died. The surviving Demon Slayers will be able to live in peace... except one. An unknown event sends Tanjirou to a reality unknown to him. The sun hashira will try to understand the rules of this new society,helping"heroes" to develop their power and investigate what happened to his old friends or if there is any way to get back with them

After being told that he can't be a hero by All Might, Izuku ends up in a state of depression. One night after a walk he bumps into a pale man who turns out to be the leader of the demons named Muzan. Izuku while fleeing from the demons is saved by the Hashira, who work in the shadows of the hero society. Now the powerful samurai will teach Izuku how to become a strong hero.

Aun cuando se creyese que All For One podría ser la primera gran amenaza con la que la humanidad tuvo que lidiar tras la aparición los quirk, lo cierto es que la humanidad no podría estar más equivocada y es que aunque no lo parezca, un antiguo mal de pasado, el cual no se había visto desde la era Taisho, parecía amenazar con resurgir nuevamente de entre las sombras

Daki regretted being a burden. She regretted being too weak to take care of herself. But most of all, she regretted holding her brother back until they'd finally been defeated. She had a new life now, a second chance she wouldn't waste. Never again would she be a burden, never again would she be weak. She'll repay all the love she's been given if it's the last thing she does.

All For One ends up in Taisho era japan and meets two siblings that will change his life forever...

Muzan Kibutsuji was dead- dying at the hands of The Demon Slayers after warring with them for over 1000 Years. When he died, he knew full well that he was never going to reincarnate... or so he believed! After an untold amount of time in the void, a strange voice gave him a choice, remain in the void for the rest of time? Or... become reborn. He chose the latter.

Muzan Kibutsuji is dead. Everyone rejoices. To them, it was an end to an era of suffering and grief. To two demons, it was a start to a life without the tyrannical oppression. However, when 'Quirks' that resemble a little too closely to Blood Demon Arts appear, they were forced to reconsider their relationship with a society of humans that may unravel what they hid for so long.

Una historia de mi cazador favorito en un mundo lleno de héroes y villanos

Muzan survives the Sunrise Countdown Arc. Consequences arise when the Anomaly that is the Demon King continues on living... though some of them are well beyond his Control. [Cross-Posted on Ao3]

Eri prays for a new life far away, and her pleading is answered, suddenly surrounded by people who need hugs. Kokushibo and Nakime are now parents, Akaza, Doma, and Muzan are uncles, Daki is an aunt, the other two are the odd cousins, and none of them have the slightest clue why she has a horn and where she got powers.

Deku is searching for All For One, Jailbreaker, the Symbol of Evil, the Emperor of Darkness, the man who calls himself the Demon King. After a strange incident that throws him through time, it seems that Deku has a new target. Muzan Kibutsuji. [Deku is taken from the Vigilante Arc and placed into Mugen Train Arc.]

After he died, Himejima Gyomei thought he could finally rest. He never expected to wake up hundreds of years later in the body of one Midoriya Izuku. Regardless, he is going to once again carry out his duty to protect. This time as the Unshakable Hero Himejima. WARNING: Spoilers for both KNY and MHA

izuku learns flame breathing

Akaza had lived his life and was ready to pass on as Hakuji and so he did only to wake up a thousand years later in a body not his own living a life not originaly his

Acompañen a Akaza a esta nueva aventura donde con el objetivo de estar con su amada en muerte hace que cambie de mundo junto con una persona que lo va a acompañar durante su travecia.

Tanjiro Kanado's life has gone to hell. His whole family was brutally murder and his sister has turned into a demon. However, she still has humanity and continues to love him. Now Tanjiro needs to learn to become a demon slayer to cure his sister, however, every hero in Japan is looking for them so both are on the run and train in a hidden world that not even the heroes know.

Akaza in My Hero Academia. Akaza's backstory except instead of attacking the rival dojo he leans towards becoming someone good instead. I've really been wanting to try out this concept cause I love it.

an idea for kny x bnha you can use it(maybe add a kny recanation as midoriya I suggest fem midoriya)

Summary: Y/n L/n is the Last Demon Slayer that has ever live, he lives at his Mother's house which is the Butterfly Mansion, With no Demons lurking around, Y/n has taken the likings of Joining the Hero Corps. also please read my other book from Wattpad my account name is Fanchristpo

Izuku, a young boy who lived a peaceful life until a fateful day where his life turned upside down. What path will he take and how much will this change him? Follow Izuku on his journey to find out.

When Tanjirou ends up in the future he's surprised that life has changed so much. But what are these "quirks"? and why are they so similar to blood-demon-arts. And now Villains are being turned to demons?

The rise of someone belonging to a race long forgotten, considered merely a myth, causes many bizarre side effects in this hero and villain infested world. Yet he's not the only one that came from his slumber, he had to release that brat first unless he'd want to get strange looks. He knew that kid wouldn't last, except he would.

A particularly bad incident with bakugo as children leads to an impossible meeting for Izuku and the ramifications of this meeting will alter the course of fate.

After sacrificing himself for the defeat of Kibutsuji Muzan, Zenitsu Agatsuma is reborn as Denki Kaminari's twin. Fulfilling the will of his previous life, he sets on the path to be a hero. With his brother at his side, he takes on the world. SPOILER ALERT!(KNY) Stronger Denki