A forced love story between a non-human and a young girl! Despite being compared to her smart younger sister, Shiraki Mizore is trying her best to get the top spot in her grade at a prestigious school in order to live up to her mother's expectations. Just as she is feeling that she has reached her limit because no matter how hard she tries, she is not recognized, one night she wanders into another world and is seriously injured and near death. Mizore doesn't want to die, but a troublesome senpai at school, Mayoi Yuraku, who often picks on her, reaches out to her. The price of being saved by this "devil" senior is a forced master-servant relationship and an adult kiss!?