Zenitsu, Genya, Kaigaku, Sanemi, and Giyuu are teleported to the MHA universe, while in the midst of the Infinity Castle Battle. Ha ha, what could possibly go wrong? Apparently everything. (This is satire, I swear-) [Contains SaneGiyuu, and possibly crossover pairings]

Izuku Midoriya was born with a demonic quirk and was shunned and neglected his whole life. Lets see how his life continues as he left his old life behind.

A Headcanon/Oneshot on if the demon slayer and the MHA universes were the same one.

The artists enter a tattooing competition.

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.

Tokoyami Fumikage and Bakugo Katsuki are pulled into a void, landing in the world of Demon Slayer. Misconceptions are a bitch.

When Izuku Midoriya finally has enough, a demon who hasn't takes the quirkless boys place. Upper Moon Two Doma wakes up in a new body, in a puddle of blood, and Katsuki Bakugo dreads what happened to his friend.

Four-year-old Izumi was living the life. She was well liked, great grades, friends with even the very crass Bakugou Katsuki, but one night her mother is murdered and eaten by a demon. What happens when the current Sun Hashira saves her and trains her in the ways of the Demon Slayer Corps? (Rated M for extreme violence and gore, harsh language. You have been warned.)

When a mentally unstable pro hero raised by the H.P.S.C. retires via an explosion from the chest and is sent to a world of Demons and Slayers, Kaina Tsutsumi finds herself unsure on how to deal with her current situation.

Denki Kaminari is pulled into the world of Demon Slayer, meeting his pseudo-dad, Midoriya and Eri No. 2.0, his dimensional doppelganger, and Bakugo on steroids. What fun!

An already demonic girl, Himiko Toga, becomes an official Demon, getting the best family she could ever ask for. Tanjiro is conflicted, Genya has social anxiety, and our dear Flower Hashira is still a Hashira. Woop Woop!

Onyotsu an inspiring demon slayer aiming to become a great demon slayer just like her idol shinobu kocho, she has train herself through her idol and practice shinobu's breathing technique insect breathing. Now she is on her way to the demon forest to uphold her test but once she got there she noticed something very unbelievable she couldn't understand

In which Hitoshi Shinsou is reincarnated as Hitoshi Kamado, and is the moon to Tanjiro Kamado's sun.

No true summary yet. Original characters! Demon SlayerDeku! Deku has a Quirk! FemaleDeku!

So basically Zenitau get reincarnated in the world of MHA and becomes a hero and accomplishes his will.

Hizashi and his fellow UA staff members are drawn into a conflict that was spawned centuries before the era of quirks first began when a mysterious demon girl seeks to capture another one of Hizashi's friends that his co-workers are surprised he has. (Sequel to 'Hizashi Yamada vs. the zombie apocalypse') (Crossover with Demon Slayer) (Crack fic elements) (Rating pending)

Dive into the world of Demon Slayer through the eyes of a character with your name and her brother! Then watch a double crossover happen. You and Ryuko from the world of Demon Slayer to the world of My Hero Academia, while two others from the world of My Hero Academia arrive into the world of Demon Slayer! Enjoy!

After his ill-fated battle with Akaza, Rengoku Kyojuro wakes up in another world, one with quirks and new technology and very quickly a new family for him to join. The Todoroki siblings have been longing for someone to rescue them from their father for years now but never expected their savior to come in the form of a strange man who seems to know nothing about the world he is in.

Izuku is a quirkless kid in a superhuman society. He trains to become a water-breather demon slayer. He becomes a vigilante too. This is my first fanfic so..yeah I'm not experienced. Also I have a really bad habit of writing "..." so sorry

A Demon and a Goddess brought the Hero's and students of UA High School in to watch the adventures of Tanjiro and Nezuko Kamado. What are their reactions?

Izuku's dad calls him "little dragon" as a joke, but 'dragon' is an understatement. He outgrows his nickname the way one outgrows their old skin: what lies beneath is far greater, waiting for a reason to break free. Waiting for a reason to eat. (Izuku becomes a Dragon Slayer (Fairy Tail) because the author wants to make cool new DS forms. Kimetsu no Yaiba BACKGROUND characters)

Waking up and having a rather powerful Quirk? Check! Not knowing how to use it because of an injury sustained by a Villain? Also... Check... Bad luck is no stranger to Alyx Leonidus, but in this case, it took a turn for the worse. After waking up with no recollection of who he is or where he was, Alyx is seemingly thrown into the world of Quirks!