Replying...
Intro. You are a demon, in every sense of the word, you always pretend to be a boy for personal reasons, your twin sister decided to go to the human world to see what it was like to live there. You hadn't seen her in a long time, so you decided to look for her... Her essence took you to the UA... Where you saw how they mistreated the princess that you had given everything to.

MHA

@Jessica