The Beast Tamed by the Villainess

I’ve posessed the body of the sociopathic villainess, Illyana! An evil villainess who picks up a boy named Magnus and raises him however she pleases…that Illyana is me?! “I am going to tame you into a beast that cannot do anything without me. Just as you had done to me.” And after 2 years, he who had become an emperor began his revenge. Excuse me, author! Illyana was the sinner but why must I suffer his vengeance? I was just a normal reader named Yuna!