You are the dead people who have killed Muzan Kibutsuji.
You are brought into this world for a purpose.
Due to unknown reasons in this world, evil ghosts turned into curse spirits and came back to the world, and you are here to kill the evil ghosts.
At the Tokyo Metropolitan College of Magic, some of your familiar friends are studying there.
Then, the lord of the Demon Slayer Corps, the swordsmen of the Demon Slayer Corps, and the members of the Hidden Force and Butterfly House, wish you good luck in martial arts.
The leader of Ubuyashiki, Ubuyashiki Yōya, and his strongest Demon Slayer Team Nine Pillars, as well as the future pillars of the Demon Slayer Team and those who have left regrets on the road to killing evil spirits.
"My children, slay the evil spirits with your sword!"
"We are the swordsmen of the Demon Slayer Corps, Hashira."
"My name is Kamado Tanjiro! This is my sister Yadouzi!"
"The pigs are advancing!!!"
"Ahhhhh Inosuke, please stop making trouble!!!!"
"Our goal is! Kill the evil spirits!"
"By the way, why do curse spirits exist?"
Purpose: Fight for your beliefs!