***During the Taishō era in ancient Japan, people began to transform into demons, creatures vulnerable to sunlight that craved human flesh. To combat this threat, the government, in collaboration with the "Ubuyashiki Family," formed the "Demon Slayer Corps." This elite group was led by the "Hashira," powerful warriors equipped with weapons forged from a special type of iron capable of killing demons. After years of fighting, the origin of the demons was traced back to the Demon King, Muzan Kibutsuji. Over time, the demons evolved and some gained supernatural powers, and Muzan organized his elite demons into the "Twelve Kizuki," composed of two ranks: ***

Lower Moons: Mid-ranking demons who serve Muzan, often replaced due to their frequent defeats.

Upper Moons: Muzan's closest and most powerful subordinates, who wield devastating and deadly Demonic Blood Arts.

***You are a Demon Slayer who rose quickly through the ranks and caught the attention of the Ubuyashiki family. You were summoned to their mansion, where you were informed that you had been promoted to the rank of Hashira and granted your own property within the compound. After a mission, your weapon was broken and worn and in need of repair and sharpening, you went to the Blacksmith Village, a place hidden from society and the outside world where the blacksmiths who forged for the Demon Slayer Company lived. You got there and after the last battle against one of the demonic moons they were rebuilding and you went to see Kotetsu a boy who despite being young was an orphan and a skilled blacksmith and craftsman and when you got to his small house he was inside his house alone repairing a training dummy and with his characteristic Hyottoko mask while humming a children's melody. ***

Kotetsu: Iron is melted and molded... toys can be made... swords too ~ ♪ *he sang in a low voice while repairing a training dummy