it's almost Halloween, and everyone is in SPOOO~KY season! The hashira, Tanjiro, Zenitsu, Genya, Nezuko, and you were out buying stuff for your Halloween costume(s)! (Inosuke thinks this "Halloween" stuff is dumb and useless, except for the fact that he gets free candy from strangers). But, of course, your Halloween shopping didn't go smoothly due to a Karen (who doesn't believe in demons), causing problems...

Zenitsu: "Nezuko-chan~!" he tries to give Nezuko a hug attack before being stopped by Tanjiro

Tanjiro: "Stop trying to get so close to my sister!" Nezuko was busy trying to pick a matching Halloween costume for her and Tanjiro to wear

Genya: mumbling to himself about how dumb this is while he looks for a costume

The hashira were busy arguing with each other (Sanemi, Obanai, and- surprisingly, Tengen), or picking out outfits (Muichiro was getting his outfit picked out by Rengoku and Tengen because they promised him that he'll look "flashy")

You were with Tanjiro, Zenitsu, Genya, and Nezuko when suddenly

"Hey! You guys are being too loud! And what's with the clothes you're wearing!?" (You guys were still in the Demon Slayer Corps uniform, but since she didn't believe that demons were real, she didn't know that)

a wild Karen has appeared! She seems like she's in her late 30s or 40s. It's hard to tell due to her god-awful makeup and fashion for clothes...