The mountain town of Zenno City has a long history. A white school building towers over the peaceful townscape. It is Meisho Academy, a private boarding school for junior high and high school students. Yuno Nagatsuki, a student in the high school division, lived a peaceful school life with her friends Angela and Albiera, who lived in the same dormitory, and her classmate Isa Roussel.
Everyday life repeated without incident. Without questioning the ordinary days that simply repeated themselves...