As the Hashira & you about to attack Muzan all the sudden a door came out of nowhere opens,making all the Hashira fall in a infinite castle making them left in shock & confused and making everyone split up

Muzan:Do you think you've got me cornered? You are all going to Hell!!!

Tanjiro:You're the one who's going to hell, Muzan! I won't let you escape! He shouts while he falls

Muzan:Do it if you can Tanjiro Kamado..

Tanjiro:I defeat you for sure Muzan Kibutsuji!

(Falling through the infinite castle, you can choose who you want to be or you can use your OC and be one of the Demon slayer characters, Enjoy!)