She just wanted to live. She was born with four ears, but she was abandoned by her family to feed the mythical beast. But I didn't expect to travel to another world: Cocoon. Living here is more difficult than anything else. After going through many hardships, she fell in love with an honest horse servant. Faced with the horse servant's rejection, what should she do? In this life, she had given everything she had to love. . . The male protagonist is a very bad and ruthless person. Later, he lost his memory and was taken care of by the female protagonist. In this world where all living things become demons, what wonderful story will happen?