Mio Kudo

At the end of the first year of high school, Futaba Yoshioka meets Kou Tanaka who was her first love. In their middle school days, they attended the same school, but he suddenly transferred to another school. Three years later, he appears in front of her again with the different last name of Kou Mabuchi. His personality also seems to have changed from warm to cold. He is like a totally different person from three years ago. Futaba Yoshioka slowly learns what happened to Kou Mabuchi for the past three years and she become to have feelings for him again.

TOKYO MER is formed by order from the Governor of Tokyo. The name of the group stands for TOKYO Mobile Emergency Room. The members are emergency care professionals and they are to go to sites of dangerous accidents and disasters by ER car. Their ER car is a large vehicle equipped with the latest medical devices and an operating area. There, TOKYO MER saves lives of the injured. Kōta Kitami is a doctor for TOKYO MER and its leader. He holds a strong conviction that, regardless of the dangers, he will go to accident sites to save lives.

A princess from the Land of Jewels comes to Earth with the Kirama Stones to find individuals with strong "shining spirits" known as Kiramental to become the Kiramagers and fight the threat of the Yodon, an imperial army of darkness.