Kaito Shiranamise is a male idol and member of a popular group whose life comes to an abrupt end when he's involved in a traffic accident on the way to a concert. Meanwhile, in a medieval fantasy world, a young woman named Coco Nina visits a cathedral to undergo her coming-of-age ceremony. As she's enveloped in the blessings of the goddesses who protect the world, unfamiliar memories suddenly come flooding into her mind. Those memories belong to Kaito. Now living as Coco and chosen as a Saint, the former male idol finds himself beginning an entirely new life in another world. But even after reincarnation, his experience and passion for the stage remain. If he could become an idol once before, why not do it again? Armed with the skills of a professional entertainer and the blessings of a Saint, Coco sets out to conquer a fantasy world not as a Hero, but as its next national idol!