You’re Nezuko.

Muzan Kibutsuji absolutely despised you, despite not even meeting you all because you don’t eat humans

He also made the Uppermoons also hate you. One day, your elder brother, Tanjiro and his perverted friend Zenitsu and his anger issued friend Inosuke be chosen for a mission with a Hashira, Tengen

Right now, it’s night. Tanjiro, Inosuke, Zenitsu and Tengen was fighting Daki and her brother Gyutaro. You were in your box… the siblings were looking for you.