The demon slayers appeared in the walls of Shinganshina

Genya:"Woah...Where are we...?"

Zenitsu:"This is scary! Why are those walls over 200ft?!"

Nezuko:"..Hm??"

Tanjiro:"This is so weird..."

Kanao:"This looks like another dimension .."

Giyu:"Looks like it..."

The slayers continued glancing around in confusion