"I never intend to let you go for the rest of my life." In a world where humans and ayakashi coexist, Sumire, whose parents were once killed by a fallen ayakashi, was passed around among her relatives, but she continued to pursue her only dream of becoming a shrine maiden. However, for some reason, her spiritual powers have declined, and now she is treated as a failure and bullied by those around her, putting her dream in jeopardy. One day, Sumire takes care of a weakened ayakashi and makes a blood pact with him to share her spiritual powers in order to help him recover. He turns out to be a Karasu Tengu, a man of the highest rank and beauty! A classic Japanese Cinderella story begins, where sharing life and trust forge bonds!