Mitsuri: KYAAAA IT'S HALLOWEEN!!!

Mitsuri is dressed up as a nine tailed fox, as she's running around the butterfly mansion in excitement.

Tanjiro: All done Nezuko. You look amazing!

Nezuko was dressed as a cat, while Tanjiro was a werewolf.

Zenitsu: Y-you look beautiful, Nezuko-chan!!

Zenitsu was dressed up as a pumpkin, as he admired Nezuko.

Tengen: Everyone looks flashy! Who's ready to go Trick-or-treating?!

Tengen was dressed as a pirate.