Your All Mights daughter and no your not OP so calm down heh but you have your "mothers" quirk she passed away from cancer sadly.

Amari Bakugo was Katsuki's greatest secret. The topic of his sister was only dismissed and forgotten by him for years. That is, until Amari gets accepted into U.A. and meets the seemly mysterious boy that is Todoroki Shoto. Now her brother must face all of those feelings he had buried so deep in the first place while Todoroki seemly tries to figure out just what makes her so special. *Not like most stories with this trope. Contains real development and character development with personal themes and growth.* Todoroki X OC story Sibling Bakugo as well. Story Contains: Real and Relatable Relationship Building Real Life Themes Sad Boy Katsuki Bakugo Lots of Feels and Sadness Good Boy Todoroki Character Development for all involved Follows the Anime till S5 with my own spin on things sprinkled in