Hello!
First, this Demon Slayer map should be used in 1.16.5
This card requires the Demon Slayer mod to work. : Kimetsu no Yaiba (Demon Sla... - Mods - Minecraft - CurseForge
On the map you will find: Mount Nagakumo where you can find Rui and his whole family, the tanjiro house on his snow-covered Mount, Mount Sagari where you can find Urokodaki’s house, Hashira headquarters, Nakime and Muzan infinity castle and finally a traditional Japanese village.
I specify that the first version of the map was built in an empty world, and that Slimes can appear, I managed to solve this problem with a Data Pack in the second version of the map.
Credits:
Ocra creator of the mod demon slayer :Kimetsu no Yaiba (Demon Sla... - Mods - Minecraft - CurseForge
Infinity Castle - Infinity Castle - Demon Slayer Minecraft Map (planetminecraft.com)