Backstabber Mha x reader

In a story where y/n was raised as a villan for all she could remember until all for one decided to give her a mission to go to UA and get information off of the heros and there plans what could possibly go wrong? could she betray the villans or betray the heroes who trusted her?

WARNINGS: violence, talk of suicide, mature content, angst, major age gap between her and shigaraki, etc (before each chapter I will give a warning)

I also do not own any of the mha characters presented in this book