All For One's Daughter: All or Nothing

A Danganronpa x My Hero Academia x (slight) Persona Series Crossover
Spurned by her half-brother for possessing two Quirks while he remains Quirkless (on top of being bullied for one her Quirks being deemed as "villainous"), Izuku's half-sister Mekuru Katsuragi was ready to end it all alongside her only best friends who were also being hurt just like her. What was supposed to be a suicide attempt turned into a leap of faith as a certain dark and misty man stopped them and brought them to his boss, All For One. Revealing himself as Mekuru's "long-lost" father, he suggests Mekuru to be his sole successor and offers to "upgrade" her Quirks so that she can share her newfound abilities with her friends. Follow Mekuru Katsuragi as she and her allies go on a crusade to purge this world of the "demons" both (fake) heroes and villains alike.