This happens after Class 1A start working as Heroes. But someone or something started prowling the streets at night... (I have only seen mha until season 3 so don't blame me if it's inaccurate ;-;) (Villain Tanjiro AU don't judge hehe)

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

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.

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

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.

In the tomb of the legendary demon slayer family 'Kamado' and all their kin, lay the bones of the man who defeated Muzan, the most fearful of all demons. Then, one day the stone was moved aside and the bones were robbed from their resting place. Who would want the bones of a dead man? - Somewhere deep underground, Tanjirou Kamado wakes up from the dead.

Midoriya Bakugo Mineta and Eri and sent to the world of Demon Slayer after a villain attack.

After the long battle with the defeated Upper Moon 3 Akaza, Tanjirou Kamado, in a battered state and unable to move any further, had died, and met with the first Breath User Yoriichi. With his goal of turning Nezuko into a human now completed, the young Demon Slayer must now seek a new purpose. To help others in need in a new world filled with Heroes and special powers.

Some random ideas more like dust bunnies just gather in the corner that would like for someone to adopt them. If you're interested in one of them just don't forget to credit me.

Aquella prometía ser una noche normal, una simple caminata silenciosa hasta la calidez de su hogar. No obstante, los obstáculos en el camino nunca pueden faltar, y en ese momento, había tomado una forma humana acompañada de unas excéntricas alas de color rojizo. Aquella tonalidad que provocaba dolores de cabeza a la joven Shinobu

Tanjiro Kamado was a man who jumped through time to see his mission completed. After almost ten years of living in the future however, with a wife and child of his own, he stumbles upon remnants of Muzan's demonic taint. Finding out his mission is still incomplete, Tanjiro takes up the blade once more. But what can he do as the last Slayer alive?

Izuku Midoriya was scared of his neighbor. Her eyes were the intense color of freshly bloomed cherry blossoms, the pupil an animalistic slit, and he could have sworn that the one time he saw her smile she had fangs. But he couldn't stay scared forever, not when his mom was leaving him with her for a week. (Kimetsu no Yaiba Crossover)

"No man is ever created equal. Over a span of thousands of years, the darkness in man's hearts were able to turn them into demons." Izuku Midoriya is pushed into a world where man and demon coexist. Honor, family and bloodshed await as he becomes the symbol of peace by ending the demon reign. (co-authored with Unity-in-silence ,also check out their work!)