The Demon Princess of UA

BNHA X Muzan's sister reader

After dying in the Infinity Fortress along with her older brother, Muzan, and his demons, the uppermoons. Y/N Kibutsuji has been given a second chance at life in a different universe when she finds herself in a dark alleyway of modern Japan. However, now she has to survive alone as a human without her brother, making her want to be dead to be with him. But instead of dying, she's taken in by pro heroes to attend one of the most popular hero schools in Japan, UA High