A girl named Nagisa Aoi was transfer to St. Miator. Upon first entering the campus grounds she is overcome with joy by the overall appearance of the surrounding area, but her joy is soon turned to sorrow as she accidentally stumbles down a hill, causing her to be lost and disoriented. While walking around the grounds trying to figure out where she is, she comes across a student by the name of Shizuma Hanazono, who happens to be Astrea Hill's Etoile, a very important person who acts as a representative among the different schools and has specific duties that she must fulfill.[3] Nagisa is instantly overcome by Shizuma's beauty and finds that she cannot move. After Shizuma kisses her on the forehead, Nagisa loses consciousness and awakens in the school's infirmary. Next to her bed is a different girl the same age as Nagisa named Tamao Suzumi who informs her that they are to be roommates in the dormitory.