Shy, crybaby Fumi has just transferred into Matsuoka Girl’s High School, in the city of Kamakura. It’s been ten years since she moved away, leaving her dear friend Akira behind; and soon, the two are reunited once more. Akira is now attending Fujigaya Girls’ Academy, though she and Fumi still manage to see each other regardless. Between classes and social engagements, the two will experience love, the struggle to admit one’s true feelings, and the joy of companionship.
On Astraea Hill stand 3 prestigious female-only academies known as St. Miatre, Spica, and LeRim; and though the schools are separate, they share a single campus and dormitory. Nagisa Aoi is a 10th grader who has decided to transfer to St. Miatre's Girls' Academy. Though her transition has been smooth so far, while exploring the campus Aoi inadvertently falls down a hill, sees the beautiful Shimuza, and promptly (not to mention embarrassingly) faints. Nagisa continues to see Shimuza out and about, but soon discovers that she is the "Etoile" -- a well respected girl within all of the schools. With Shizuma taking a liking to the new transfer student Nagisa, secrets of Shizuma's past will unravel over the coming school year.