The weakest demon (slime) who longed to be human is reincarnated as a saint, but with the worst character of all, a villainous noble girl. From the lowest status, hated and resented; an existence where she will be terminated immediately if her true identity as a slime is discovered, she will become a beloved saint in order to live a safe and secure life!

This is the story of a "princess" who torments the whole world.
She is loved by God, she has beautiful hair, and she wields a violent blade. She was the prettiest young lady in the kingdom, but she was also the most powerful of mercenaries, nicknamed "Savage Fang." All of them are now beginning to be trampled by a girl who defies expectations.