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

It is the Taisho era. If 'he' had been born in this era overrun by demons, and became a demon himself, and joined the Demon Slayer Corps... Note this an English translation of Japanese Fanfic. The original can be found by typing 鬼の俺が鬼殺隊にいるとか間違っている in the search bar

There had to be a way to switch her back, so thus begins Sora and Riku's journey to finding a cure for Kairi. Kingdom Hearts characters in the Demon Slayer universe. Strong mentions of blood and violence.

Yoriichi Tsugikuni reincarnates in a land of unnatural creatures, unfamiliar technologies, and mysteries that stretch beyond his past life. Armed with the memories of a life passed, he fights to find and understand his place in this strange world, unaware that a much larger struggle awaits—a battle where the darkness is more ancient and enduring than anything he's faced before.

This is the story of a man who had all the strength in the world but lost everything. The past mourns him, while the future slowly forgets. In the end, he died with regret and sorrow over a failed duty. Beyond this end, even after death, the work is never finished.

"If there is a God, He must have turned His back on me long ago, for no divine being could witness this suffering and remain silent." The tale of a shinobi lost abandoned by his world. A Demon Slayer seeking stolen purpose. A man fighting his past and striving for a future with loved ones. A boy, lonely and forgotten, redeemed by two siblings and chasing lost memories.

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.

Yoriichi lives on in the Taimanin Asagi world watch now as the demons tremble in fear of the Sun breathing swordsman. Yoriichi Harem. Op Yoriichi.

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.

Ruby finds herself in Demon Slayer and after learning Nezuko’s and Tanijirou’s story, she decides to help them.

Naruto is dead after protecting the village. He is reincarnated into the world of Demon Slayer, but he carries all of his previous powers with him.

Aether's Journey into Multiverse Polygamy: Navigating Multiple Realities in Search of a Solo Harem. . .

Picked up from the Original story "Once a Shinobi Now a Demon Slayer". Sent to another dimension as a last-ditch effort by Kaguya and Having lost everything he ever cared for, Naruto finds himself alone in the world of Demon Slayers. Reluctant to play the role of a hero again, he decides to lend his aid to a demon looking to atone for her sins.

Tanjiro Kamado perished at the hands of Muzan Kibutsuji - and a subsequent chance meeting with the Sun Breath User arose. Fate weaves a new path for Tanjiro when he crosses paths with a peculiar boy and fairy. Together, they traverse the perilous territories of Teyvat to search the Seven, and through it all, they may solve the enigma that sent this world into chaos.

He had another chance, another family. So he will protect them. When the demons threatened his family, the greatest shinobi decided to let the world know how much stronger one can get when they have someone precious to protect. He will protect them from everything. That is his ninja way. Not maybe as Naruto... but perhaps as Tanjiro. Current Chapter: The Train of Hell.

After being transported to this World full of Demons, It's up to Naruto to not only to help save this world, but to also find a way home.

Jon Snow, bastard son of Lord Eddard Stark stands to gain very little in this world. So, he decides to devote his life to the Demon Slayer Corporation and protect the people of Westeros from the threat of demons. Watch the adventures of Jon and his fellow slayers as the fight an ancient evil.

Kurosaki Ichigo grew up slightly different than most children. With stories of demons, samurai, and a dead culture of shinobi, and odd little games between her and her mother, Ichigo had an active childhood. Then her mother is killed in front of her, and many things change. Being Uzui Tengen's tsuguko, would be a flamboyant beginning for a normal person. For Ichigo, it's explosive.

I have often heard humans refer to a situation as something already predestined but Only the weak say such nonsense. It is different for the truly powerful: they create this something called "destiny" with their own hands so why not create the mine

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

After 3 years, the well unsealed. However, it's not the Sengoku Era Kagome's taken to. Wielding strength unrivaled by any other, she's swiftly brought into the Demon Slayer Corps. When Tanjiro showed up, toting his demon sister in that box, she quickly became attached to the siblings. If anything, it only made Sanemi that much more aggravated.

No matter how different they seemed, there appeared to be some sort of likeness that existed between them. Sanemi was abrasive to most, but Kagome was the outlier. Kagome was kind and gentle, yet below the surface lurked a searing temper harsh enough to frighten even the worst demons. They provided one another with the balance they both so badly needed.

Enmu has been killed and sent to hell. What's a demon to do. Thankfully, his fun isn't over, it's only just beginning. Happy Halloween!

One year. Exactly one year since the death of a Mother. The Kurosaki family, engulfed in grief, stayed out longer then they should have, encountering a demon on the walk home. Good thing a Demon Slayer was around to save them. Inspired by The Butterfly(Kurosaki) effect. Rated T for now, may become M as story matures.

Dante manages to escape being eaten alive only to find herself between worlds.