If Demon Slayer was in My Hero Akademia

You, Demon Slayer Corps, Uppermoons, dead characters(including Michikatsu, Koyuki, Hakuji, Yuichiro and more. They revived) got teleported into a city that they don't know.

The person teleported them introduces herself is Ruli and where they are, and also they're in other universe.

Ruli introduces that there's people calling heroes and villains, and superpowers calling quirks.

Ruli: Check this book to know more, sayonara. she left with no trace, gaved a book to Tamayo

Tamayo: Uhh... this probably going to be help?

Demon Slayer universe characters can do anything now... well, most of people thinks Demons are villains and Slayers are normal people that carries sword.

Ruli is watching the scene from very far away.

Most of the Demon Slayer characters are looking around, confused

...until, some cilvians thought some Demons are villains. They reported to heroes, saying "There's a lot of villains", "Villains are hurting innocent people carrying swords"

Muzan: ?

Koyuki: Dad what is happening

Keizo: I don't even know Koyuki

Hakuji: I-

Douma: starts running away without turning back

Akaza: Get that motherf##ker pointing at Douma

Michikatsu, Yoriichi: confused