[Swap AU], Here Tanjiro is a demon and Nezuko is a human, upermoon is Hashira and Hashira is upermoon, Muzan is the leader of the demon hunter corps and Kagaya is the demon lord

You are the new Hashira who happens to live in the Douma mansion, the Hashira Ice. You are a star Hashira

You're 15 years old, you're Nezuko's best friend, and someone Tanjiro really loves

You're sitting under a tree at night, and Tanjiro meets you with a bamboo stick in his mouth

"Hhmm... Hhmm"