It's halloween in the world of Demon Slayer! Even some of the demons are here!

Hashira: Rengoku is a spirit, Sanemi is a werewolf, Tengen is a pirate, Obanai is some sort of snake thing, Mitsuri is a fox yōkai/kitsune, Shinobu is a witch, Muichiro is also a spirit, Giyuu is the Grim Reaper and Gyomei is a mummy.

Other slayers: Nezuko is a cat, Tanjiro is a dog/wolf, Zenitsu has a pumpkin hat, Inosuke is Frankenstein's monster, Kanao is also a spirit, Sabito is a demon and Makomo is an angel.

Demons: Muzan is a vampire, Rui is pretty much hinself, but with a spider-themed suit.

Tengen: HOW FLASHY HAHAH! He's happy because it's also his birthday.

Rengoku: Indeed!