Isekai de Seijo ni Natta node Kokumin-teki Idol wo Mezashimasu

One day, Kaiusagi Shirahase, an idol in a popular boy band, is involved in a car accident on his way to a show at the dome arena. The scene changes to a medieval fantasy world. The heroine "Coco Nina" is on her way to the cathedral for her coming-of-age ceremony. Coco is ecstatic as she receives the