After visiting her grandmother, Yurika Tanaka, a regular college student, suddenly finds herself in another world where magic is possible. Furthermore, she is mistaken for the "Princess of Dawn," a princess who brings peace, according to an ancient legend, and is asked to perform a ritual, but demons get in the way...!?

After being unfairly fired from an advertising agency, Manaka Ai is currently searching for a new job as a freelance writer. Today, she shows up to a party in Roppongi, but things aren't going well. Then, she reunites with her former colleague, Shindo Eiji. Shindo has achieved success in business, and Manaka trusts him, as he always has. But something is different. This reunion leads Manaka to become embroiled in one of Shindo's plans... This is the beginning of an immoral revenge romance between these two difficult characters!