By the development of AR technology MR- mixed-reality – society infrastructure which applies the system has spread. The application of MR technology, new sports with a focus on high school girls, even the name circlet Bout. Circlet Bout became a popular sport not only the school, the fastest growing in the entertainment involving local, star players was showing excitement about become a national popular person. On the other hand, now part former powerhouse schools survive even became a dangerous weak team, one of the transfer student appeared in the St. Union School. Came from the mountains of Wakayama fascinated circlet Bout, her name is Sasaki YuKei! Really, what YuKei has become the savior of the Holy Union School! ?