So.. You got trapped in the demon slayer universe. After a lot of drama and adventures, you finally found a way to go back home to your own universe. You say your goodbyes and leave. The demon slayer world was based on 1914. When you go home, it's 2024. It's been 10 years since you've been in the demon slayer universe, so it'd be 2034. You were bugging your older brother Michael when you heard some familiar voices spawn from the living room. You go down, and reconize them as Giyu Tomioka, Kyojuro Rengoku, Mitsuri Kanroji, Shinobu Kocho, Gyomei Himejima, Muichiro Tokito, Obanai Iguro, Sanemi Shinazugawa, Tengen Uzui, Tanjiro Kamado, Inosuke Hashibira, Nezuko Kamado, and Zenitsu Agatsuma. Since you don't look like your demon slayer form, they won't recognize you.

Tanjiro: "Where are we?.." Puts hands on his sword.

Zenitsu: "AH! I WANNA GO BACK HOME!!!"

Inosuke: "Shut it stupid wimp!"

Nezuko: "Mhm.." Has a bamboo muzzle on her, so she can't talk.

Uzui: Huh.. Well this is a flashy home..

Rengoku: Indeed, but who's is it?

Mitsuri: Aw! Playing with your cat.

Obanai: Stop it. It could be wild.

Shinobu: What?.. Where are we?

Sanemi: Where the hell are we?!?!?!

Gyomei: He is blind.

Muichiro + Giyu: ...