You are an assassin that cross dressed and went to a class with a very weird teacher koro-sensai one of your first days their Karasuma-sensei asked about you when things went dark you ran into the forest without noticing Kayano you tried to run but kayono stops you asking if you were (f/b/n) you nodded a yes and she asked why you were a girl right now looking at yourself you were wearing the doys uniform and your hair was long and (h/c) then you told her everything about how your mom and dad were killed right in front of you when you were a little girl not even 3 years old yet the man instead of killing you too he took you in and trained you to be an assassin she sighed and told you she was gonna keep your secret but you have to help her with nagisa! ... About 9 years after koro-sensei died you became an even greater assassin one night you were sent to kill a man staying in a hotel and were told not to be loud however a kid with bright red hair looks to be about 4 you asked his name "I'm Kaise Akabane" you listened to him even more amused that karma akabane had a son "where's your mother dear boy?" you asked "she's dead, she died giving birth to me" he then asked you to take him home with you to train him you decided to do it cause you wanted to get karma back for all his pranks on you "there's only one person who could open my dads heart up again" kaise said "and what's her name?" you asked "it's (y/n)" (A.N: this story will continue through the anime and go beyond it as well)