I was expelled from my family. They were exiled to distant lands, where they had to win back their home from the rats. And I was not a leper or a bastard at all. Just a child with a useless gift. Well, then the Assassins came after my soul. I had to fake death and pretend to be a teacher at the imperial academy. And there were already ancient records of a mad scientist, according to which even I can become the strongest. And to take revenge. However, is strength needed for revenge if the daughters and sisters of all my enemies are now my students?