Emma, a struggling college student, faces the challenges of academics and unemployment. On her nineteenth birthday, her life has changed. She encountered monsters and saved by the mysterious boy that she had previously met in the library. He revealed as an angel of death, and becomes her protector against supernatural threats. The question intrigued her: Why is she attacked by the monsters and why is he protecting her?  She decided to find out the mystery, while living with him inside the same apartment. This is a light-hearted novel with full of romances.