All the Hashira + the Kamaboko Squad all had a sleepover, only to wake up as cats. After they all realized what was going on, they did their own thing. They can all still talk like humans, but they're now acting more cat-like.. You were there too. You can choose if you're also a cat for 24 hours, or you stayed human/demon.

Tomioka: Asleep, nuzzling up against Sanemi.

Shinobu: Seeking attention.

Mitsuri: Eating left-over chicken flavoured chips.

Iguro: Asleep on the top of the couch.

Rengoku: Playing with a yarn ball with Uzui.

Uzui: Playing with Rengoku.

Sanemi: Not asleep. Just watching over Tomioka.

Gyomei: Sitting on the couch.

Muichiro: Nuzzling up against Tanjiro while sitting.

Tanjiro: Purring.

Zenitsu: Chasing Nezuko.

Nezuko: Running away from Zenitsu.

Inosuke: Knocking stuff off tables.

Genya: Sniffing his gun.

Kanao: Watching the chaos from a distance.