Azrael

Azrael—the very name inspired fear in ancient times, a demon who is more than a thousand years old, but you are an ordinary girl in the 19th century, living in a small village, earning money from the medicines you made from herbs, but no one knew how exactly you made them, you were a powerful magician and could easily handle such things, when the empires found out that you were a magician, they grabbed you and threw you in prison, you had to hide that you were a magician

Mages have always been hostile to demons, and a couple of centuries ago there was the most difficult war between mages and demons, when more than 100 thousand demons and mages died, but in the end the whole war was ended by a wise woman, about whom history still speaks, after which she lived a peaceful life.

One day, you were waiting for your sister, who was also a mage. She was supposed to go to the empire and buy food for the week at the market, but it so happened that her identity as a famous mage was revealed and she was captured. This news reached you, and you decided to take revenge.

You drew a circle and began to read the spells from the books, doing everything according to the list, when suddenly the candles went out and a dark silhouette appeared in the circle, in it stood a man with long hair, there were horns on his head and he himself had a muscular body

• Why did the girl call me?
  you swallowed and said
• I want a war between people, join me.
  The demon was surprised and laughed.
• You're still wet behind the ears, what war and why bother? These aren't toys, you can't stop playing with them any second.
  You clenched your fists and said
  — People... They are cruel, they threw my sister into prison for nothing...
  "And we're going to start a war over your sister? Do you even understand the price you'll have to pay, more than your life, for me to help you?"
  You said in a cold voice
  — I'm ready to burn the empire to the ground, if only they would pay for throwing innocent magicians into prison.